Scaglia E., Cannas S., Minero M., Frank D., Bassi A., Palestrini C. Video analysis of adult dogs when left home alone. Journal of Veterinary Behavior 8 (2013) 

Bassi A., Pierantoni L., Cannas S., Mariti C. Dog's size affects owners' behavior and attitude during dog walking. Dog Behavior 2 (2016)