@article{TAM_1979_5_1_a8,
     author = {A. A. Martinyuk},
     title = {On {Chaplygin-Lyapunov} comparison principle in nonlinear mechanics},
     journal = {Theoretical and applied mechanics},
     pages = {85 },
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1979},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAM_1979_5_1_a8/}
}