TY JOUR
TI Encyclopedia of theoretical physics
AU Kaganov, M. I.
PB Physics-Uspekhi
PY 1985
JO Physics-Uspekhi
JF Physics-Uspekhi
JA Phys. Usp.
VL 28
IS 2
SP 209-212
UR https://ufn.ru/en/articles/1985/2/h/
ER https://doi.org/10.1070/PU1985v028n02ABEH003857