1. Ring chromosome 13 syndrome;Fried;Clin. Genet.,1975
2. Malformative syndrome with ring chromosome 13;Fryns;Humangenetik,1974
3. The behavior of ring chromosome 13;Hoo;Humangenetik,1974
4. Parental origin of a ring 13 chromosome in a female with multiple anomalies;Magenis;Hum. Genet.,1976
5. Reexamination of a family with a t(13q14q) and a ring D(13) child;Niebuhr;Ann. Génét.,1973