PACS:05.40.Jc, 05.60.−k, 05.45.Xt, 02.60.Cb (all) DOI:10.1070/PU1974v016n04ABEH005297 URL: https://ufn.ru/en/articles/1974/4/d/ Citation: Klyatskin V I, Tatarskii V I "Diffusive random process approximation in certain nonstationary statistical problems of physics" Sov. Phys. Usp.16 494–511 (1974)