1. Bartlett, M.S. (1960): Stochastic Population Models in Ecology and Epidemiology, Methuen, London.
2. Bertram, G.C.L., D. Lack, and B.B. Roberts (1934): Notes on East Greenland birds with a discussion of the periodic non-breeding among arctic birds, Ibis 76: 816–831.
3. Brownie, C., D.R. Anderson, K.P. Burnham and D.S. Robson (1978): Statistical Inference from Band Recovery Data - a Handbook, U.S. Depart. of the Interior Fish and Wildlife Service, Resource Publ. 131.
4. Brownie, C., and D.S. Robson (1976): Models allowing for age-dependent survival rates for band return data, Biometrics 32: 303–323.
5. Charlesworth, B. (1980): Evolution in Age-Structured Populations, Camb. Studies in Mathematical Biology 1, Cambridge Univ. Press, Cambridge.