Horrocks, J.A. & Hunte, W. (1986) Sentinel
behaviour in vervet monkeys: Who sees whom first? Animal
Behaviour, 34 (5),
1566-8.
Huheey, J. (1961). Studies in Warning Coloration and Mimicry. III.
Evolution of Mullerian Mimicry. Evolution, 15 (4), 86-93.
Iribarren, C. & Kotler, B. (2012) Foraging patterns of habitat use
reveal landscape of fear of Nubian ibex Capra nubiana. Wildlife Biology, 18 (2), 194-201.