1. N. P. Bochkov, Method for Evaluation of Chromosomal Aberrations as a Biological Indicator of Influence of the Environmental Factors on Humans. Method. Recommendations [in Russian], Moscow (1974).
2. N. P. Bochkov, R. Ya. Shram, N. P. Kuleshov, et al., Genetika,11, No. 10, 157–168 (1975).
3. A. Wald, Consecutive Analysis [Russian translation], Moscow (1960).
4. L. G. Dubinina and A. B. Bigaliev, Test System of Assay of Mutagenic Activity of Environment Contaminants in Culture of Human Lymphocytes. Method. Instructions [in Russian], Moscow (1977).
5. B. S. Duran and P. L. Odell (eds.), Cluster Analysis: A Survey, Springer-Verlag (1974).