Bandura, A. I., and O. B. Skaskiv. “SUM AND PRODUCT OF FUNCTIONS HAVING BOUNDED L-INDEX IN A DIRECTION WHICH ARE SLICE HOLOMORPHIC IN THE SAME DIRECTION: Array”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 1(53) (September 27, 2019): 9–20. Accessed April 19, 2024. https://pvntsh.nung.edu.ua/index.php/number/article/view/1082.