PT Journal Article
TI The four-dimensional group velocity
AU Polevoi V G
FAU Polevoi VG
AU Rytov S M
FAU Rytov SM
DP 10 Jul, 1978
TA Usp. Fiz. Nauk
VI 125
IP 7
PG 549-565
RX 10.3367/UFNr.0125.197807f.0549
URL https://ufn.ru/ru/articles/1978/7/f/
SO Usp. Fiz. Nauk 1978 Jul 10;125(7):549-565