%0 Journal Article %A N. V. Krylov %T On the selection of a Markov process from a system of processes and the construction of quasi-diffusion processes %J Izvestiya. Mathematics %D 1973 %P 691-709 %V 7 %N 3 %U http://geodesic.mathdoc.fr/item/IM2_1973_7_3_a12/ %G en %F IM2_1973_7_3_a12