preprint ITP-78-168 E Gorenstein, M. I. creator Zinovjev, G. M Academy of Sciences of Ukrainian SSR Institute for Theoretical Physics text ua 1979 monographic ng eng 20 p. : fig. M. I. Gorenstein, G. M. Zinovjev ; Academy of Sciences of the Ukrainian SSR, Institute for Theoretical Physics. Bibliography: p. 16. ფიზიკა 53 211220 20211220112501.0