|
Norway | |
| Mitchell, Roger H. (1980) Pyroxenes of the Fen alkaline complex, Norway. American Mineralogist, 65 (1-2) 45-54 |
| Barth,, T.F.W. & Ramberg, I.B. (1966): The Fen circular complex. In Tuttle, O.F. & Gittins, J.(eds). Carbonatites. Interscience, New York, USA. 225-257 (table 5). |
| Sæther, Egil (1957) The alkaline rock province of the Fen area in southern Norway. Det Konglige Norske Videnskabsselskaps Skrifter Vol. 1957 (1) |
| Mitchell, Roger H. (1980) Pyroxenes of the Fen alkaline complex, Norway. American Mineralogist, 65 (1-2) 45-54 |
| Sæther, Egil (1957) The alkaline rock province of the Fen area in southern Norway. Det Konglige Norske Videnskabsselskaps Skrifter Vol. 1957 (1) |
| Sæther, Egil (1957) The alkaline rock province of the Fen area in southern Norway. Det Konglige Norske Videnskabsselskaps Skrifter Vol. 1957 (1) |
| Andersen, Tom (1984) Secondary processes in carbonatites: petrology of “rødberg” (hematite-calcite-dolomite carbonatite) in the Fen central complex, Telemark (South Norway) Lithos, 17. 227-245 doi:10.1016/0024-4937(84)90022-7 |
| Adamson, O. J. (1950) Report on the Columbium occurrence of the Fen region near Ulefoss i Southern Norway. Norges Geologiske Undersøkelse. Bergarkivets Rapport BA 1343 |