Extended version of a survey report read at a scientific session of the Theoretical Physics Division of the U.S.S.R. Academy of Sciences (Leningrad, May, 1969).
Оригинал: Ширков Д В «Свойства траекторий полюсов Редже» УФН 102 87–104 (1970); DOI: 10.3367/UFNr.0102.197009d.0087