1. H. Ohshima and H. Bartsch, in “Environmental Mutagens and Carcinogens,” ed. by T. Sugimura, S. Kondo and H. Takebe, University of Tokyo Press, Tokyo, 1982, pp. 577–585.
2. H. Ohshima and Bartsch, in “Vitamin C,” ed. by J. N. Counsell and D. H. Hornig, Elsevier Applied Science Publishers, London, 1981, pp. 215–224.
3. T. Hirayama, in “Diet and Human Carcinogenesis,” ed. by J. V. Joossens, M. J. Hill and J. Geboers, Elsevier, Amsterdam, 1985, pp. 191–198.