B. Vijayabasker Reddy, and V. Srinivas. “Fixed Point Theorem For Pair of Weakly Compatible Mappings Using $CLR_T$ Property”. International Journal of Mathematics And Its Applications, vol. 6, no. 1 - E, Mar. 2018, pp. 1159-63, https://ijmaa.in/index.php/ijmaa/article/view/1217.