Pain and Problem Behavior in Cats and Dogs oleh Daniel S. Mills, Isabelle Demontigny-Bédard, Margaret Gruen, Mary P. Klinck, Kevin J. McPeake, Ana Maria Barcelos, Lynn Hewison, Himara Van Haevermaet, Sagi Denenberg, Hagar Hauser, Colleen Koch, Kelly Ballantyne, Colleen Wilson, Chirantana V Mathkari, Julia Pounder, Elena Garcia, Patrícia Darder, Jaume Fatjó, Emily Levine