1. The development of the urogenital organs;Felix,1912
2. The development of the external genitalia in the human embryo;Spaulding;Contrib Embryol Carnegie Inst,1921
3. Notes on the development of the prepuce;Hunter;J Anat,1935
4. The origin and fate of the urethral plate in man;Glenister;J Anat,1954
5. Development of the human anterior urethra;Altemus;J Urol,1991