References
- U.N. 1953 . The Determinants and Consequences of Population Trends ST/SOA/Ser. A/17, New York
- Collin . 1809 . “ Efterretninger om Grønland. Uddragne af collegial-acter af årene fra 1798–1807 ” . In Det Skandinaviske Litteraturselskabs Skrifter Vol. 5 , 173 – 232 .
- Crantz , David . 1765 . Historie von Grünland Leipzig
- Rele , J. R. 1967 . Fertility Analysis Through Extension of Stable Populations Concepts , Berkeley : University of California .