1. On the Dynamics of Exploited Fish Populations;Beverton,1957
2. W.E. Ricker, Handbook of computation for biological statistics of fish populations, Bulletin 119 of the Fisheries Resource Board, Canada, Ottawa, 1958.
3. An interdisciplinary approach to understanding nonlinear ecological dynamics;Cushing;Ecol. Model.,1996
4. Periodically forced nonlinear systems of difference equations;Cushing;J. Difference Equ. Appl.,1998
5. Some discrete competition models and the competitive exclusion principle;Cushing;J. Difference Equ. Appl.,2005