PACS:01.10.Fv DOI:10.1070/PU1982v025n02ABEH004510 URL: https://ufn.ru/en/articles/1982/2/f/ Citation: Kogan L R, Matveenko L I, Moiseev I G, Sorochenko R L "Studies of maser sources with the aid of ultralong-baseline radiointerferometry" Sov. Phys. Usp.25 118–118 (1982)