@article{ISU_2018_18_2_a2,
     author = {V. P. Kurdyumov and A. P. Khromov and V. A. Khalova},
     title = {A mixed problem for a wave equation with a nonzero initial velocity},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {157--171},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2018_18_2_a2/}
}