1. The syndrome of the metacentric microchromosome;Abbo;Helv. paediat. Acta.,1970
2. YY chromosomes and antisocial behaviour;Casey;Lancet,1966
3. Male patients with chromosome abnormality in two state hospitals;Casey;J. ment. Defic. Res.,1973
4. Partial XYY syndrome;Christensen;Humangenetik,1971