共 7 条
[1]
CATCHPOLE CK, 1980, VOCAL COMMUNICATION
[2]
HINDE R. A., 1952, BEHAVIOUR S, V2, P1
[3]
HUNTER ML, 1978, THESIS U OXFORD
[5]
Krebs J.R., 1977, P47
[6]
KREBS J R, 1971, Ecology (Washington D C), V52, P2, DOI 10.2307/1934734