1. Two extra-X chromosomes found in a teen-age girl;Hospital Tribune,1968
2. A female with the 48, XXXX karyotype;Berkeley, M.I.K.; Faed, M.J.W.;Journal of Medical Genetics,1970
3. Syndrome 48, XXXX chez une enfant de six ans. Transmission anormale de groupe Xg;De Grouchy, J.; Brissaud, H.E.; Richardet, J.M.; Repesee, G.; Sanger, R.; Race, R.R.; Salmon, C.; Salmon, D.;Annales de Genetique,1968
4. An XXXX sex chromosome complement in a female with mild mental retardation;Duncan, B.P.; Nicholl, J.A.; Downes, R.;Canadian Medical Association_Journal,1970
5. Rozszczep tqcz6wki u dziewczynki z kariotypem 48, XXXX;Hanicka, M.; Kleczkowska, A.; Makowska, J.; Sokolowski, J.; Jarczyk, K.;Polski Tygodnik Lekarski,1969