Singh, Deepak, Varsha Chauhan, and Ishak Altun. 2017. “Common Fixed Point of a Power Graphic (F,psi)-Contraction Pair on Partial B-Metric Spaces With Application”. Nonlinear Analysis: Modelling and Control 22 (5): 662-78. https://doi.org/10.15388/NA.2017.5.6.