Pitman, G.T.K. “A Lichenometrical Study of Snow Patch Variation in the Frederikshåb District, South-West Greenland, and Its Implications for Studies of Climatic and Glacial Fluctuations”. Bulletin Grønlands Geologiske Undersøgelse 104 (August 10, 1973): 1–31. Accessed July 3, 2024. https://geusjournals.org/index.php/bullggu/article/view/6645.