ZFBX - Kirkden,R.D.; Pajor,E.A. - Using preference, motivation and aversion tests to ask scientific questions about animals' feelings - Applied Animal Behaviour Science 2006; 100: 29-47
ZEZK - Kirkden,R.D.; Niel,L.; Weary,D.M. - Aversion to carbon dioxide - Laboratory Animals 2005 Oct; 39(4): 453-5
Autorenindex - authors index
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