[1]
Shehda, L.M. 2021. DEGENERATE BOUNDARY-VALUE PROBLEMS WITH A PERTURBING MATRIX FOR A DERIVATIVE: Array. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number. 1(59) (Jan. 2021), 29–37. DOI:https://doi.org/10.31471/2304-7399-2020-1(59)-29-37.