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RT Journal T1 Encyclopedia of theoretical physics A1 Kaganov,M.I. PB Physics-Uspekhi PY 1985 FD 10 Feb, 1985 JF Physics-Uspekhi JO Phys. Usp. VO 28 IS 2 SP 209-212 DO 10.1070/PU1985v028n02ABEH003857 LK https://ufn.ru/en/articles/1985/2/h/
Оригинал: Каганов М И «Энциклопедия теоретической физики» УФН 145 349–354 (1985); DOI: 10.3367/UFNr.0145.198502g.0349