1. G. T. Macfarlen and J. H. Cummings, in “The Large Intestine: Physiology, Pathophysiology, and Disease,” ed. by S. F. Phillips, J. H. Pengerton, and R. G. Shorter, Raven Press Ltd., New York, 1991, pp. 51–92.
2. C. Vendrely, in “The Cell Cycle and Cancer,” cd. by R. Baserga, Marcel Dekker Inc., New York, 1971, pp. 227–268.
3. G. Kimura, A. Itagaki, and J. Summers,Int. J. Cancer,15, 694–706 (1975).