@article{DE_1976_12_10_a13,
     author = {I. S. Lomov},
     title = {The unique solvability of the mixed problem for a hyperbolic equation with complex potential},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1866--1876},
     publisher = {mathdoc},
     volume = {12},
     number = {10},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_10_a13/}
}