@article{DAN_1957_116_4_a0,
     author = {M. A. Aizerman and F. R. Gantmakher},
     title = {Stability by means of a linear approximation of periodic solutions of a system of differential equations 
},
     journal = {Doklady Akademii Nauk},
     pages = {527--530},
     publisher = {mathdoc},
     volume = {116},
     number = {4},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_116_4_a0/}
}