Diurnal and ultradian rhythms of behaviour in a mare group of Przewalski horse (Equus ferus przewalskii), measured through one year under semi-reserve conditions

Author A. Berger, K. M. Scheibe, K. Eichhorn, A. Scheibe and J. Streich
Year 1999
Secondary title Applied Animal Behaviour Science
Volume 64
Number 1
Pages 1-17?