1. The Marine Algae of the Faeröes;Børgesen;Botany of the Faeröes,1903
2. The Algae-Vegetation of the Färöese Coasts with remarks on the Phyto-Geography;Børgesen;Botany of the Faeröes,1905
3. The Distribution of the Marine Algae of the Arctic Sea and of the Northernmost Part of the Atlantic;Børgesen;Botany of the Faeröes,1908
4. Pflanƶensoƶiologie