Repetylo, S. M. ., & Hlynsky, Y. M. . (2021). REGULARIZATION OF THE BOUNDARY–VALUE PROBLEM WITH MIXED CONDITIONS FOR A SECOND ORDER HYPERBOLIC EQUATION. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, (16(60), 11–19. https://doi.org/10.31471/2304-7399-2021-16(60)-11-19