Пономаренко, Олександр Миколайович. “INFLUENCE TWO CIRCULAR HOLES WICH COVER AGAIN ON CONCENTRATION OF STRESSES IN INFINITE PLATE BY DISPLACEMENT”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 1(17), Mar. 2019, pp. 55-61, https://pvntsh.nung.edu.ua/index.php/number/article/view/229.