@article{DAN_1969_184_2_a12,
     author = {A. S. Alekseev},
     title = {A certain property of periodic motions of a single-circuit nonlinear pulse system with an integrating network},
     journal = {Doklady Akademii Nauk},
     pages = {307--308},
     publisher = {mathdoc},
     volume = {184},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_2_a12/}
}