By Perny P.   in Annals of Operations Research

ISSN:0254-5330|80|1|137-166

Springer Publishing Company ‎(1998)‎

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By Botreau R   Veissier I   Perny P   in Animal Welfare

ISSN:0962-7286|18|4|363-370

Universities Federation for Animal Welfare‎(2009)‎

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