@article{DE_1986_22_2_a13,
     author = {S. I. Gaiduk and G. M. Zayats},
     title = {A problem from the wave theory of mechanical impact},
     journal = {Differencialʹnye uravneni\^a},
     pages = {285--298},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_2_a13/}
}