Srinuvasa Rao, B., and G. N.V.Kishore. “Common Fixed Point Theorems in Bipolar Metric Spaces With Applications to Integral Equations”. International Journal of Engineering & Technology, vol. 7, no. 4.10, Oct. 2018, pp. 1022-6, https://doi.org/10.14419/ijet.v7i4.10.26662.