PACS:42.55.−f, 42.60.Jf, 02.70.Rr (all) DOI:10.1070/PU1964v007n01ABEH003645 URL: https://ufn.ru/en/articles/1964/1/f/ Citation: Stepanov B I, Gribkovskii V P "Application of the statistical method to calculation of the optical properties of lasers" Sov. Phys. Usp.7 68–79 (1964)