Medvid О. M., M. M. Symotyuk, and I. R. Tymkiv. 2018. “METRICAL ESTIMATIONS OF DETERMINANT OF THE INTEGRAL PROBLEM FOR EQUATION OF VIBRATING OF STRING: Array”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 2(46) (December):38-46. https://doi.org/10.31471/2304-7399-2018-2(46)-38-46.