@article{DAN_1991_321_3_a14,
     author = {A. T. Il'ichev and A. Yu. Semenov},
     title = {Orbital stability of boundary states in the theory of long waves},
     journal = {Doklady Akademii Nauk},
     pages = {505--508},
     publisher = {mathdoc},
     volume = {321},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_321_3_a14/}
}