[1]
W. Holubowski, “Note on Symmetric Words in Metabelian Groups”, Ukr. Mat. Zhurn., vol. 54, no. 7, pp. 1013–1015, Jul. 2002, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4140