Applied Animal Behaviour Science
Applied Animal Behaviour Science > 1999 > 61 > 4 > 319-334
Applied Animal Behaviour Science > 2002 > 75 > 2 > 133-146
Applied Animal Behaviour Science > 1999 > 61 > 4 > 319-334
Applied Animal Behaviour Science > 2002 > 75 > 2 > 133-146