Panksepp Jaak, Solms Mark
Center for the Study of Animal Well-Being, Department of Veterinary & Comparative Anatomy, Pharmacology and Physiology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-6520, USA.
Trends Cogn Sci. 2012 Jan;16(1):6-8. doi: 10.1016/j.tics.2011.11.005. Epub 2011 Dec 5.