@article{SM_1995_80_1_a0,
     author = {A. P. Buslaev},
     title = {Some properties of the~spectrum of nonlinear equations of {Sturm{\textendash}Liouville} type},
     journal = {Sbornik. Mathematics},
     pages = {1--14},
     year = {1995},
     volume = {80},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_80_1_a0/}
}