@article{IM2_1987_29_2_a3,
     author = {A. Ya. Zaslavskii},
     title = {Ground states in a~model of {Frenkel--Kontorova} type},
     journal = {Izvestiya. Mathematics },
     pages = {323--354},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1987_29_2_a3/}
}