1. Atkins, L., Pant, S. S., Hazard, G. W., and Ouellette, E. M. (1966/67).
2. Primordial dwarfism and mental deficiency associated with a group C annular chromosome;Bueno, M.; Amo, A.del; Hermida, F.;Genetica Iberica,1969
3. An infant with multiple congenital anomalies and a ring chromosome in group C(X-6-12);Butler, L.J.; France, N.E.; Jacoby, N.M.;journal of Medical Genetics,1967
4. Chieri, P. R. de, Albores, J. M., Cosin, A., and Cosin, J. M. (1972).
5. Familial occurrence;Gacs, G.; Schuler, D.; Sellyei, M.,1970