Frontmatter — Contents — Preface — 1. Introduction: weight unbiased Monte Carlo estimates — 2. Parametric estimates for solving problems of mathematical physics — 3. Parametric estimates for studying the radiation transfer in inhomogeneous media — Appendix A: The improvement of random number generators by modulo 1 summation — Appendix B: On modelling chemical reactions by the Monte Carlo method — Appendix C: One unsolved minimax problem — References