@article{MZM_2021_109_6_a7,
     author = {S. A. Sergeev},
     title = {Asymptotics of the {Head} {Wave} in the {Cauchy} {Problem} for a {Difference} {Scheme} {Corresponding} to the {Two-Dimensional} {Wave} {Equation} with {Localized} {Initial} {Data}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {884--900},
     publisher = {mathdoc},
     volume = {109},
     number = {6},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_109_6_a7/}
}