@article{DAN_1979_244_5_a3,
     author = {M. M. Lavrent'ev and S. I. Temirbulatov},
     title = {On the theory of the mixed problem for the wave equation},
     journal = {Doklady Akademii Nauk},
     pages = {1062--1064},
     publisher = {mathdoc},
     volume = {244},
     number = {5},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_244_5_a3/}
}