Research areas

  1. Published

    Oversigt over Botanisk Haves Plantesamling. / Friis, Ib; Edlefsen, Leif Blohm.

    Københavns Universitets Fond til tilvejebringelse af læremidler, 1970. 101 p.

    Research output: Book/ReportBookEducation

  2. Published

    A new species of Guizotia (Compositae) from NE tropical Africa. / Friis, Ib.

    In: Norwegian Journal of Botany, Vol. 18, 1971, p. 231-234.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    A new species of Haemanthus (Amaryllidaceae) from SW Ethiopia. / Friis, Ib; Bjørnstad, Inger.

    In: Norwegian Journal of Botany, Vol. 18, 1971, p. 227-230.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    A revision of the Stachys aculeolatus group (Labiateae) in tropical Africa. / Friis, Ib; Bjørnstad, Inger; Thulin, Mats.

    In: Norwegian Journal of Botany, Vol. 18, 1971, p. 121-138.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Hall effect in the normal and flux-flow states of some indium alloys. / Byrnak, B. ; Rasmussen, Finn Berg.

    In: Physica B: Condensed Matter, Vol. 55, 01.10.1971, p. 357-361.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Studies in the genus Haemanthus (Amaryllidaceae) I. The infrageneric taxonomy. / Friis, Ib; Bjørnstad, Inger.

    In: Norwegian Journal of Botany, Vol. 19, 1972, p. 187-206.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Studies in the genus Haemanthus (Amaryllidaceae) II. A revision of the section Demeusea (De Wild. & Th. Dur.) Pax & Hoffm. emend Bjørnst. & Friis. / Friis, Ib; Bjørnstad, Inger.

    In: Norwegian Journal of Botany, Vol. 19, 1972, p. 207 — 222.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Dorstenia soerensenii sp. nov. (Moraceae) from SW Ethiopia, and related species. / Friis, Ib.

    In: Norwegian Journal of Botany, Vol. 21, 1974, p. 101-110.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Studies in the genus Haemanthus (Amaryllidaceae) III. A revision of the sections Gyaxis and Nerissa. / Friis, Ib; Bjørnstad, Inger.

    In: Norwegian Journal of Botany, Vol. 21, 1974, p. 243-275.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Observation of nuclear magnetic order in solid 3He. / Halperin, W.P.; Archie, C.N.; Rasmussen, Finn Berg; Buhrman, R.A.; Richardson, R.C.

    In: Physical Review Letters, Vol. 32, No. 17, 01.01.1974, p. 927-930.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Linociera giordanoi (Oleaceae) - the correct name for a widespread African species. / Friis, Ib.

    In: Kew Bulletin, Vol. 30, 1975, p. 16-16.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    The giant species of Cirsium (Asteraceae) in S Ethiopia. / Friis, Ib.

    In: Norwegian Journal of Botany, Vol. 22, 1975, p. 201 - 207.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    The two alternative systems of nomenclature proposed and used for orchids by Du Petit-Thouars. / Friis, Ib; Rasmussen, Finn N.

    In: Taxon, Vol. 24, 1975, p. 307-318.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Thermodynamic temperature scale derived from measurements of 3He latent heat. / Rasmussen, Finn Berg; Halperin, W.P.; Archie, C.N.; Richardson, R.C.

    In: Physical Review Letters, Vol. 34, No. 12, 24.03.1975, p. 718-721.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Pelargonium boranense sp. nov. (Geraniaceae). / Friis, Ib; Gilbert, Michael G.

    In: Flowering Plants of Africa, Vol. 43, 1976, p. Tab. 1705 + 4 pp. text.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Omkring en berømt dansk botaniker i Indien [Nathanael Wallich]. / Friis, Ib; Hamann, Ole Jørgen.

    In: Naturens Verden, Vol. 1976, No. 12, 1976, p. 393-408.

    Research output: Contribution to journalJournal articleCommunication

  17. Published

    Progress made in the botanical exploration of Africa: Ethiopia. / Friis, Ib.

    In: Boissiera, Vol. 24, 1976, p. 599-599.

    Research output: Contribution to journalJournal articleResearch

  18. Published

    Studies in the genus Haemanthus (Amaryllidaceae) IV. Division of the genus into Haemanthus s. str. and Scadoxus, with notes on Haemanthus s. str. / Friis, Ib; Nordal, Inger.

    In: Norwegian Journal of Botany, Vol. 23, 1976, p. 63-77.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Specific heat of normal and superfluid 3He on the melting curve. / Halperin, W.P.; Archie, C.N.; Rasmussen, Finn Berg; Alvesalo, Tapio ; Richardson, R.C.

    In: Physical Review B. Condensed Matter and Materials Physics, Vol. 13, 01.03.1976, p. 2124-2131.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    A reconsideration of the genera Monotheca and Spiniluma (Sapotaceae). / Friis, Ib.

    In: Kew Bulletin, Vol. 33, 1978, p. 91-98.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    East African bryophytes IV. Danish collections. / Bizot, M.; Friis, Ib; Lewinsky, Jette; Thamas, Pócs.

    In: Lindbergia, Vol. 4, 1978, p. 259-284.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Properties of melting  3He : specific heat, entropy, latent heat and temperature. / Halperin, W.P.; Rasmussen, Finn Berg; Archie, C.N.; Richardson, R.C.

    In: Journal of Low Temperature Physics, Vol. 31, 1978, p. 617.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Dombeya torrida, the correct name for James Bruce's "Walkuffa" / Friis, Ib; Hepper, F. Nigel.

    In: Botaniska Notiser, Vol. 132, 1979, p. 397-398.

    Research output: Contribution to journalJournal articleResearch

  24. Published

    The wild populations of Coffea arabica L. and the cultivated coffee. / Friis, Ib.

    Taxonomic Aspects of African Economic Botany: Proceedings of the IXth Plenary Meeting of AETFAT.. ed. / G. Kunkel. Las Palmas de Gran Canaria., 1979. p. 63-68.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  25. Published

    Spin polarization of liquid 3He by rapid melting of polarized solid. / Chapellier, M.; Frossati, G.; Rasmussen, Finn Berg.

    In: Physical Review Letters, Vol. 42, 20.05.1979, p. 904-907.

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. Published

    Proposal to conserve the generic name Hagenia J. F. Gmel. over Bankesia Bruce (Rosaceae). / Friis, Ib; Hepper, F. Nigel; Jansen, P.C.M.

    In: Taxon, Vol. 29, 1980, p. 511-512.

    Research output: Contribution to journalJournal articleResearchpeer-review

  27. Published

    The authority and date of publication of the genus Casuarina (Casuarinaceae) and its type species. / Friis, Ib.

    In: Taxon, Vol. 29, 1980, p. 511-512.

    Research output: Contribution to journalJournal articleResearchpeer-review

  28. Published

    The identity of the Ethiopian monotypic genus Tzellemtinia Chiov. / Friis, Ib; Vollesen, Kaj.

    In: Botaniska Notiser, Vol. 133, 1980, p. 347-349.

    Research output: Contribution to journalJournal articleResearch

  29. Published

    Production of highly polarized solid 3He in a Pomeranchuk cell. / Rasmussen, Finn Berg.

    In: Journal de Physique. Colloques, Vol. 41, No. C7, 01.07.1980, p. C7: 89-94.

    Research output: Contribution to journalJournal articleResearchpeer-review

  30. Published

    A note on effective publication. / Friis, Ib; Dahlgren, Rolf.

    In: Taxon, Vol. 30, 1981, p. 499-501.

    Research output: Contribution to journalJournal articleResearchpeer-review

  31. Published

    A synopsis of the genus Girardinia Gaud. (Urticaceae). / Friis, Ib.

    In: Kew Bulletin, Vol. 36, 1981, p. 143-157.

    Research output: Contribution to journalJournal articleResearchpeer-review

  32. Published

    Notes on Somalian Sapindaceae. / Friis, Ib.

    In: Kew Bulletin, Vol. 36, 1981, p. 139-141.

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. Published

    The taxonomy and distribution of Mimusops laurifolia (Sapotaceae). / Friis, Ib.

    In: Kew Bulletin, Vol. 35, 1981, p. 785-792.

    Research output: Contribution to journalJournal articleResearchpeer-review

  34. Published

    Superconductivity in (TMTSF)2 ClO4 at zero pressure. / Bechgaard, Klaus; Carneiro, K.; Jacobsen, C.S.; Olsen, M.; Rasmussen, F.B.; Rindorf, G.

    In: J. Molecul. Crystals and Liquid Crystals, Vol. 79, 01.02.1981, p. 271-275.

    Research output: Contribution to journalJournal articleResearchpeer-review

  35. Published

    Zero-pressure organic superconductor : Di- (Tetramethyltetraselenafulvalenium)-perchlorate [(TMTSF)2ClO4]. / Bechgaard, K.; Carneiro, K.; Olsen, M.; Jacobsen, C.S.; Rasmussen, Finn Berg.

    In: Physical Review Letters, Vol. 46, No. 13, 30.03.1981, p. 852-855.

    Research output: Contribution to journalJournal articleResearchpeer-review

  36. Published

    Fluctuation-induced first-order nuclear magnetic transition in solid 3He. / Bak, Per; Rasmussen, Finn Berg.

    In: Physical Review B. Condensed Matter and Materials Physics, Vol. 23, No. 9, 19.05.1981, p. 4538-4540.

    Research output: Contribution to journalJournal articleResearchpeer-review

  37. Published

    Experiment on the melting pressure of spin polarized He3. / Chapellier, M.; Olsen, M.; Rasmussen, Finn Berg.

    In: Physica B: Condensed Matter, Vol. 107, No. 1-3, 01.08.1981, p. 31-32.

    Research output: Contribution to journalJournal articleResearch

  38. Published

    What causes the first-order magnetic transition in solid 3He. / Bak, Per; Rasmussen, Finn Berg.

    In: Physica B: Condensed Matter, Vol. 108, No. 1-3, 01.09.1981, p. 849-51.

    Research output: Contribution to journalJournal articleResearchpeer-review

  39. Published

    Name changes for well known species of Boehmeria (Urticaceae). / Friis, Ib; Marais, Wessel.

    In: Kew Bulletin, Vol. 37, 1982, p. 163-163.

    Research output: Contribution to journalJournal articleResearchpeer-review

  40. Published

    New taxa from the Imatong Mountains, S. Sudan. / Friis, Ib; Vollesen, Kaj.

    In: Kew Bulletin, Vol. 38, 1982, p. 221-228.

    Research output: Contribution to journalJournal articleResearchpeer-review

  41. Published

    Studies in the flora and vegetation of SW Ethiopia. / Friis, Ib; Rasmussen, Finn N.; Vollesen, Kaj.

    In: Opera Botanica, Vol. 63, 1982, p. 1-70.

    Research output: Contribution to journalJournal articleResearchpeer-review

  42. Published

    The identity of Rumicicarpus ramosissimus Chiov. (Tiliaceae). / Friis, Ib.

    In: Nordic Journal of Botany, Vol. 2, 1982, p. 111-113.

    Research output: Contribution to journalJournal articleResearchpeer-review

  43. Published

    The identity of Urera longifolia and U. oligoloba, a supplement to Chew's monograph of Laportea (Urticaceae). / Friis, Ib.

    In: Nordic Journal of Botany, Vol. 2, 1982, p. 231-233.

    Research output: Contribution to journalJournal articleResearchpeer-review

  44. Published

    The typification of Forsskaolea viridis Ehrenb. ex Webb (Urticaceae). / Friis, Ib.

    In: Taxon, Vol. 31, 1982, p. 727-729.

    Research output: Contribution to journalJournal articleResearchpeer-review

  45. Published

    A synopsis of the genus Obetia (Urticaceae). / Friis, Ib.

    In: Kew Bulletin, Vol. 38, 1983, p. 221-228.

    Research output: Contribution to journalJournal articleResearchpeer-review

  46. Published

    Myriader af liv [regnskoven]. / Friis, Ib.

    In: Levende Natur - Tidsskrift for international naturbevarelse, Vol. 3, 1983, p. 3-7.

    Research output: Contribution to journalJournal articleCommunication

  47. Published

    Note on the botanical collections of Pehr Forsskål. / Friis, Ib.

    In: Kew Bulletin, Vol. 38, 1983, p. 457-467.

    Research output: Contribution to journalJournal articleResearchpeer-review

  48. Published

    Phytogeography of the tropical north-East African mountains (Ethiopia, Djibouti, Somalia). / Friis, Ib.

    In: Bothalia, Vol. 14, 1983, p. 525-532.

    Research output: Contribution to journalJournal articleResearchpeer-review

  49. Published

    The acaulescent and succulent species of Dorstenia sect. Kosaria (Moraceae) from NE tropical Africa and Arabia. / Friis, Ib.

    In: Nordic Journal of Botany, Vol. 3, 1983, p. 533-538.

    Research output: Contribution to journalJournal articleResearchpeer-review

  50. Published

    Sciaplea Rauschert (1982) is a synonym of Dialium L. (1767). / Friis, Ib.

    In: Taxon, Vol. 33, 1984, p. 505-506.

    Research output: Contribution to journalJournal articleResearchpeer-review

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