@article{MAT_1957_1_4_a2,
     author = {J. L. Massera},
     title = {Contributions to stability theory},
     journal = {Matematika},
     pages = {81--104},
     publisher = {mathdoc},
     volume = {1},
     number = {4},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1957_1_4_a2/}
}