Pourrazi S, Khojasteh F, Javahernia M, Khandani H. An affirmative answer to quasi-contraction’s open problem under some local constraints in JS-metric spaces. MMA [Internet]. 2019Jun.6 [cited 2024Nov.10];24(3):445-56. Available from: https://btp.vgtu.lt/index.php/MMA/article/view/6495