Шарко, О. В. “IS HIGHER-ORDER VAGUENESS A PSEUDO-PROBLEM?”. Proceedings of the Kyiv Aviation Institute. Series: Philosophy. Cultural 17, no. 1 (December 17, 2015): 88–92. Accessed June 17, 2026. http://jrnl.kai.edu.ua/index.php/VisnikPK/article/view/9782.