H. C. Gulløv and Hans Kappel: Haabetz Colonie 1721-28. A historical-archaeological investigation of the Danish-Norwegian Colonization of Greenland. (Publications of the National Museum, Ethnographical Series Vol. XVI) Copenhagen, 1979. 245 s. - Kjær Sørensen, Axel (Historie/Jyske Samlinger, 1981)