1. Mentally retarded schizoid twin girls with 47 chromosomes;Biesele, J.J.; Schmid, W.; Lawlis, M.G.;Lancet,1962
2. A partial mongol;Dent, T.; Edwards, J.H.; Delhanty, J.D.A.;ibid,1963
3. An aberrant small acrocentric chromosome;Ellis, J.R.; Marshall, R.; Penrose, L.S.;Ann. hum. Genet,1962
4. An apparently identical extra autosome in two severely retarded sisters with multiple malformations;Cytogenetics
5. Trisomy 13-I5: A clinical syndrome;Lubs, H.A.; Koenig, E.U.; Brandt, I.K.;ibid; Multiple congenital anomalies in a negro infant with 13-15 trisomy,1961