[1]
A. I. Sapelkin, “$P$-Faithful Partially Ordered Sets”, Ukr. Mat. Zhurn., vol. 54, no. 10, pp. 1381–1395, Oct. 2002, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4176