1. Barber, K E & Cross, R R Jr. (1952). J. Urol. 67, 494.
2. Barnett, H I M, Botterell, E H, Jousse, A T & Wynn-Jones, M (1966). Brain, 89, 159.
3. Bennett, A E (1957). Clues to Suicide, p. 187. New York: McGraw-Hill Book Co., Inc.
4. Bors, E (1954). J. int. Coll. Surg. 21, 513.
5. Bors, E, Conrad, C A & Massell, T B (1954). Surgery Gynec. Obstet. 99, 451.