1. Blue nevus of the prostate gland;Nigogosyan;Cancer,1963
2. Le problème du naevus bleu prostatique;Simard;Ann. Anat. Pathol.,1964
3. Blue nevus of the prostate gland;Jao;Arch. Pathol.,1971
4. The incidence and probable origin of melanin in the prostate;Guillan;J. Urol.,1970
5. Melanoma of the urinary tract and prostate gland;Lowsley;South. Med. J.,1951