@article{DE_1998_34_12_a7,
     author = {A. D. Myshkis},
     title = {Auto-oscillations of a string with impulse feedback},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1640--1644},
     publisher = {mathdoc},
     volume = {34},
     number = {12},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_12_a7/}
}