N.MANGAPATHI, K.R.K.RAO, B.SRINUVASA RAO, MD IMAM PASHA (2022) “On Certain Common Coupled Fixed Points of Rational Contraction Mappings in Partial B-Metric Spaces and its Applications”, Mathematical Statistician and Engineering Applications, 71(4), pp. 735–752. doi: 10.17762/msea.v71i4.552.