H. Ostenfeld, C. “Th. Thoroddsen: An Account of the Physical Geography of Iceland With Special Reference to the Plant Life. The Botany of Iceland, Edited by L. Kolderup Rosen Vinge and Eug. Warming, Part I, Nr. 2 (S. 187—343). Published by the Aid of the Carlsberg Fund. Copenhagen (J. Frimodt) & London (J. Wheldon & Co.) 1914”. Geografisk Tidsskrift, bd. 23, januar 1916, https://tidsskrift.dk/geografisktidsskrift/article/view/46937.