By Rijnsdorp A D   Grift R E   Kraak S B.   in Canadian Journal of Fisheries and Aquatic Sciences

ISSN:1205-7533|62|4|833-843

NRC Research Press‎(2005)‎

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By Kraak S.B.M.   Bakker T.C.M.   in Animal Behaviour

ISSN:0003-3472|56|4|859-866

Elsevier‎(1998)‎

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