K. Johansson

The Quaternary history of Visdalen, Edgeøya, eastern Svalbard.

P. Möller, C. Kronborg, O. P. Stubdrup, 1997 .

Geology and origin of the hematite ores of the Nimba Range, Liberia

J. Berge, J. Jack, K. Johansson, 1977 .