1.
Chandok S, Narang TD. Common fixed points and invariant approximation of $R$-subweakly commuting maps in convex metric spaces. Ukr. Mat. Zhurn. [Internet]. 2010Oct.25 [cited 2024Apr.20];62(10):1367–1376. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2961