@article{FAA_2008_42_2_a4,
     author = {A. Ya. Maltsev},
     title = {The {Lorentz-Invariant} {Deformation} of the {Whitham} {System} for the {Nonlinear} {Klein--Gordon} {Equation}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {28--43},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2008_42_2_a4/}
}