1. Living in groups: predators and prey;Bertram,1978
2. Studies on social groupings in fishes;Breder;Bull. Am. Mus. nat. Hist.,1959
3. On the survival value of fish schools;Breder;Zoologica,1967
4. Fish schools as operational structures;Breder;Fish. Bull. U.S.,1976
5. Avian flocking in the presence of a predator;Caraco;Nature, Lond.,1980