1.
Choudhury BS, Kundu A. FIXED POINT THEOREMS FOR NONLINEAR CONTRACTIONS IN ORDERED PARTIAL METRIC SPACES. J. Nonlinear Anal. Optim. [Internet]. 2012Oct.20 [cited 2021Nov.28];4(1):147-58. Available from: http://www.math.sci.nu.ac.th/ojs302/index.php/jnao/article/view/187