1. Deletion of the short arm of chromosome 9 (46,9p−):A new deletion syndrome;Alfi;Ann Genet,1973
2. Alfi OS, Sanger RG, Sweeney AE, et al. 46,del(9)(22): A new deletion syndrome. Birth Defects: Original Article Series
3. The 9p− syndrome;Alfi;Birth Defects: Original Article Series,1976
4. The 9p−syndrome;Alfi;Ann Genet,1976
5. 9pter →p22 deletion syndrome: a case report;Allderdice;Birth Defects: Original Article Series,1976