1. A critical reanalysis of the ontogeny and phylogeny of mammalian social and locomotor play: an ethological hornet's nest;Bekoff,1981
2. Human and animal inter-relationships. Review series: 5. Normal behaviour patterns of cats: Part 1;Blackshaw;Aust. Vet. Practit.,1985
3. Human and animal inter-relationships. Review series: 3. Normal behaviour pattern of dogs: Part 1;Blackshaw;Aust. Vet Practit.,1985
4. Getting-up and lying-down behaviour of loose-housed sows and social contacts between sows and piglets during day 1 and day 8 after parturition;Blackshaw;Appl. Anim. Behav. Sci.,1990
5. Rough-and-tumble play among nursery school children;Blurton-Jones,1976