Smith, D.; Cohen, M. M. (1973). „Widow's Peak Scalp-Hair Anomaly and ITS Relation to Ocular Hypertelorism”. The Lancet. 302 (7838): 1127—1128. PMID4128017. doi:10.1016/s0140-6736(73)90939-2.
Smith, D.; Cohen, M. M. (1973). „Widow's Peak Scalp-Hair Anomaly and ITS Relation to Ocular Hypertelorism”. The Lancet. 302 (7838): 1127—1128. PMID4128017. doi:10.1016/s0140-6736(73)90939-2.