“Complete Systems of Invariants of $m$-Tuples for Fundamental Groups of a Two-Dimensional Bilinear-Metric Space over the Field of Rational Numbers ”. Uzbek Mathematical Journal 69, no. 4 (November 3, 2025): 53–69. Accessed December 4, 2025. https://uzmj.mathinst.uz/index.php/uzmj/article/view/108.