1. Casey, M. D., Blank, C. E., Street, D. R. K., Segall, L. J., McDougall, J. H., McGrath, P. J., and Skinner, J. L. (1966). YY chromosomes and antisocial behaviour. Lancet, 2, 859-860.
2. Males with an XYY sex chromosome complement;Court Brown, W.M.;Journal of Medical Genetics,1968
3. Sex chromosome abnormalities;Goodman, R.M.; Smith, W.S.;Nature (London),1967
4. Chromatin-positive and XYY boys in approved Schools;Hunter, H.;Lancet,1968
5. Aggressive behaviour, mental subnormality and the XYY male;Jacobs, P.A.; Brunton, M.; Melville, M.M.; Brittain, R.P.; McClemont, W.F.;Nature (London),1965