@article{VSGTU_2014_3_a1,
     author = {S. A. Aldashev},
     title = {A criterion for the unique solvability of the {Dirichlet} spectral problem in a cylindrical domain for multidimensional hyperbolic equations with wave operator},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {21--30},
     publisher = {mathdoc},
     number = {3},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2014_3_a1/}
}