REFERENCES
- Nylander, B. & Andersson, S. Scand. J. Gastroent. 1974, 9, 751–758.
- Robert, A. & Magerlein, B. J. pp. 247–253 in Advances in Biosciences, Vol. 9. Pergamon Press, 1973.
- Robert, A., Nylander, B. & Andersson, S. Life Sciences 1974, 14, 533–538.