TY - JOUR AU - O. F. Men'shikh TI - Conservation Laws of Second Order for the Born--Infeld Equation and Other Related Equations JO - Matematičeskie zametki PY - 2008 SP - 874 EP - 881 VL - 84 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2008_84_6_a5/ LA - ru ID - MZM_2008_84_6_a5 ER -