@article{DAN_1990_310_1_a14,
     author = {S. S. Lapushkin},
     title = {Particle-like excitations in the $X$--$Y$ model with external action of impulse type},
     journal = {Doklady Akademii Nauk},
     pages = {63--65},
     publisher = {mathdoc},
     volume = {310},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_310_1_a14/}
}