1. Optimal Foraging Theory: Constraints and Cognitive Processes;B Sinervo,1997
2. Optimal Foraging Theory: A Critical Review;GH Pyke;Annual Review of Ecology and Systematics,1984
3. Why Lions Form Groups: Food is Not Enough;C Packer;The American Naturalist,1990
4. Mixed-species feeding aggregation of dolphins, large tunas and seabirds in the Azores;É Clua;Aquatic Living Resources,2001