Batsamut, V. M., M. V. Batsamut, Y. H. Bashkatov, and D. Yu. Tolstonosov. “TWO-LAYER GRAPH INVARIANT FOR PATTERN RECOGNITION”. Radio Electronics, Computer Science, Control, no. 2 (June 29, 2025): 84–93. Accessed July 5, 2025. https://ric.zp.edu.ua/article/view/332913.