TY - BOOK AU - Arnolʹd,V.I. AU - Levi,Mark TI - Geometrical methods in the theory of ordinary differential equations SN - 0387906819 AV - QA372 .A6913 1983 U1 - 515.3/52 19 PY - 1983/// CY - New York PB - Springer-Verlag KW - Differential equations N1 - Translation of: Dopolnitelʹnye glavy teorii obyknovennykh different︠s︡ialʹnykh uravneniĭ ER -