@article{DAN_1969_185_2_a2,
     author = {A. Kh. Gelig},
     title = {Stability of pulse systems with frequency modulation},
     journal = {Doklady Akademii Nauk},
     pages = {253--256},
     publisher = {mathdoc},
     volume = {185},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_2_a2/}
}