1. Elements of physical biology;Lotka,1925
2. Variazioni e fluttuazioni del numero dindividui in specie animali conviventi;Volterra;Mem R Accad Naz dei Lincei,1926
3. Mathematical biology I: an introduction;Murray,2003
4. The functional response of predator to prey density and its role in mimicry and population regulation;Holling;Mem Entomol Soc Can,1965
5. The balance of animal populations;Nicholson;J Anim Ecol,1933