TY - BOOK AU - Markovski, B. L. AU - Stojanov, D. C. TI - Invariant equation for nonlinearly transforming fields and conservation laws T2 - ˆ[‰Издания] VL - Е2-4519 PY - 1969/// CY - Дубна KW - Фз-110 KW - rubbk KW - ˆ[‰В319] N2 - Библиогр.: с. 27 ER -