1. Au, W., Pathak, S., Collie, C.J. & Hsu, T.C. 1978 Cytogenic toxicity of gentian violet and crystal violet on mammalian cells in vitro. Mutation Research 58, 269?276.
2. Barroso, G., Mai, T.T. & Labar�re, J. 1988 Effects of UV irradiation on germination and on chloramphenicol and tetracycline resistance of Volvariella volvacea basidiospores. Mushroom Journal for the Tropics 83, 73?84.
3. Challen, M.P. & Elliott, T.J. 1987 Production and evaluation of fungicide resistant mutants in the cultivated mushroom Agaricus bisporus. Transactions of the British Mycological Society 88, 433?439.
4. Challen, M.P., Wilson, K.L. & Elliott, T.J. 1989a Fungicide resistance in Agaricus bisporus I. In vitro production and assessment of resistance mutants. Mushroom Science 12, 37?45.
5. Challen, M.P., Wilson, K.L. & Elliott, T.J. 1989b Fungicide resistance in Agaricus bisporus II. In vitro carboxin resistance and disease control. Mushroom Science 12, 47?53.