Заторський, Роман Андрійович. 2019. “Scalar Product of a Vector on a Paradeterminant of a Triangular Matrix and Its Application”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 1(1) (March):22-30. https://pvntsh.nung.edu.ua/index.php/number/article/view/338.