Choudhury, B. S. and Kundu, A. (2012) “FIXED POINT THEOREMS FOR NONLINEAR CONTRACTIONS IN ORDERED PARTIAL METRIC SPACES”, Journal of Nonlinear Analysis and Optimization: Theory & Applications, 4(1), pp. 147-158. Available at: http://www.math.sci.nu.ac.th/ojs302/index.php/jnao/article/view/187 (Accessed: 28November2021).