Bapurao C. Dhage. “Nonlinear \(D\)-Set Contraction Mappings in Partially Ordered Normed Linear Spaces and Applications to Functional Hybrid Integral Equations”. Malaya Journal of Matematik 3, no. 01 (January 1, 2015): 62–85. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/452.