\Bibitem{AzlGneKol81} \by T.~A.~Azlarov, B.~V.~Gnedenko, A.~N.~Kolmogorov, Yu.~V.~Prokhorov, T.~A.~Sarymsakov, V.~A.~Statulyavichus \paper Sagdy Khasanovich Sirazhdinov (on~his sixtieth birthday) \jour Russian Math. Surveys \yr 1981 \vol 36 \issue 6 \pages 208--214 \mathnet{http://mi.mathnet.ru//eng/rm3295} \crossref{https://doi.org/10.1070/RM1981v036n06ABEH003141} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=643092} \zmath{https://zbmath.org/?q=an:0475.01018|0502.01017} \adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?1981RuMaS..36..208A}