@article{IM2_1992_38_2_a5,
     author = {P. I. Plotnikov},
     title = {Nonuniqueness of solutions of the problem of solitary waves and bifurcation of critical points 
},
     journal = {Izvestiya. Mathematics },
     pages = {333--357},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1992_38_2_a5/}
}