1. Attachment and dependency: A comparison;Ainsworth,1972
2. The ties that do not bind: A study of the human-animal bonds that fail;Arkow,1984
3. Attachment and dependency: A psychobiological and social learning synthesis;Cairns,1972
4. Selecting the best companion animal: Breed and gender specific behavioural profiles;Hart,1984
5. The elements of attachment: Relationship maintenance and intimacy;Holcomb;J. Delta. Soc.,1985