[1]
T. O. Banakh, I. V. Protasov, and K. D. Protasova, “Descriptive complexity of the sizes of subsets of groups”, Ukr. Mat. Zhurn., vol. 69, no. 9, pp. 1280–1283, Sep. 2017, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1780