6Boe K E,Ferevik G. Grouping and social preferences in calves, heifers and cows[J]. Applied Animal Behaviour Science, 2003, 80(3):175-190.
7Cadoret R,Cain C,Crowe R. Evidence for gene-environment interaction in the development of adolescent antisocial behavior [J]. Behavior Genetics,1983,13 (3) :301-310.
8Caspi A, Mcclay J, Terrie E, et al. Role of genotype in the cycle of violence in malt reated children[J]. Science, 2003,297 (5582) :851.
9Christensen J W,Ladewig J,Sondergaard E,et al. Effects of individual versus group stabling on social behaviour in domestic stallions[J]. Applied Animal Behaviour Science, 2002,75 (3), 233-248.
10Courtet P, Buresi C, Abbar M, et al. No association between non-violent suicidal behavior and the serotonin transporter promoter polymorphism[J].Am J Med Genet, 2003, 116B: 72- 76.
