TY - JOUR AU - A. A. Martinyuk TI - On Chaplygin-Lyapunov comparison principle in nonlinear mechanics JO - Theoretical and applied mechanics PY - 1979 SP - 85 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_1979_5_1_a8/ LA - en ID - TAM_1979_5_1_a8 ER -