R. Krishnakumar, and D. Dhamodharan. “Common Fixed Point of Contractive Modulus on 2-Cone Banach Space”. Malaya Journal of Matematik 5, no. 03 (July 1, 2017): 608–618. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/625.