BROOKE, M. Difference in the quality of territories held by wheatears (Oenanthe oenanthe). Journal of Animal Ecology. 1979, 48, 21-32
BROOKS, R. J. Individual recognition by song in white-throated sparrows. I. Discrimination of songs of neighbors and strangers. Canadian Journal of Zoology. 1975, 53, 879-888
CATCHPOLE, C. K. Vacal Communication in Birds. 1979
CATCHPOLE, C. K. Variation in the song of the great reed warbler Acrocephalus arundinaceus in relation to mate attraction and territorial defence. Animal Behaviour. 1983, 31, 1217-1225
COLGAN, P. Is a super-territory strategy stable?. American Naturalist. 1979, 114, 604-605