Repetylo, S. M., and Ya. M. Hlynsky. 2021. “REGULARIZATION OF THE BOUNDARY–VALUE PROBLEM WITH MIXED CONDITIONS FOR A SECOND ORDER HYPERBOLIC EQUATION”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 16(60) (October):11-19. https://doi.org/10.31471/2304-7399-2021-16(60)-11-19.