ughade, manoj, Sanodia, P. L., Gupta, A., & Pandey, A. K. (2015). QUADRUPLE FIXED POINT THEOREMS FOR (α,ψ) - CONTRACTIVE TYPE MAPPINGS IN PARTIALLY ORDERED METRIC SPACES. Journal of Global Research in Mathematical Archives(JGRMA), 2(6), 27–43. Retrieved from https://jgrma.com/index.php/jgrma/article/view/225