@article{MZM_2016_100_5_a6,
     author = {S. Yu. Dobrokhotov and V. E. Nazaikinskii},
     title = {Characteristics with {Singularities} and {the~Boundary} {Values} {of~the~Asymptotic} {Solution} {of~the~Cauchy} {Problem} {for~a~Degenerate} {Wave} {Equation}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {710--731},
     publisher = {mathdoc},
     volume = {100},
     number = {5},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2016_100_5_a6/}
}