TY - JOUR AU - O. Yu. Shvedov TI - On Quasiclassical Field Theories Invariant with Respect to a Lie Group JO - Matematičeskie zametki PY - 2003 SP - 474 EP - 477 VL - 73 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2003_73_3_a18/ LA - ru ID - MZM_2003_73_3_a18 ER -