1. Andrews’ varicocele clamp;Hennan;Urology,1975
2. Varicocele, particularly with reference to its radical cure;Bennet;Lancet,1889
3. The spennatozoa count: its value in the diagnosis, prognosis and treatment of sterility;Macomber;N Engl J Med,1929
4. Sterility in the Male;Wilhelm,1937
5. Fertility in Men;Hotchkiss,1944