Raunsgaard Pedersen, K., and Jørgen Lam. “Precambriam Organic Compounds from the Ketilidian of South-West Greenland, Part III”. Meddelelser Om Grønland, vol. 185, no. 7, Jan. 1970, p. 42 pp., https://tidsskrift.dk/meddrgroenland/article/view/152388.