Teddy McCalley Alain Mertens The Pet Plant: Developing an Inanimate Emotionally Interactive Tool for the Elderly. 68-79 2007 conf/persuasive/2007 PERSUASIVE http://dx.doi.org/10.1007/978-3-540-77006-0_9 db/conf/persuasive/persuasive2007.html#McCalleyM07