@inbook{davis_1988, title={Population principles}, ISBN={0849367263}, booktitle={Rodent pest management}, publisher={Boca Raton, Fla.: CRC Press Inc}, author={Davis, D. E.}, year={1988}, pages={171} }
 @article{davis_nicholson_huffaker_1976, title={Endogenous rhythm of population change - an hypothesis}, volume={17}, number={2}, journal={Researches on Population Ecology}, author={Davis, D. E. and Nicholson, A. J. and Huffaker, C. B.}, year={1976}, pages={155} }