TY - JOUR AU - P. M. Akhmet'ev AU - O. V. Kunakovskaya TI - Integral Formula for a Generalized Sato--Levine Invariant in Magnetic Hydrodynamics JO - Matematičeskie zametki PY - 2009 SP - 524 EP - 537 VL - 85 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2009_85_4_a3/ LA - ru ID - MZM_2009_85_4_a3 ER -