Bui, Thi Ngoc Han, and Trung Hieu Nguyen. “Fixed Point Theorems for Generalized Pata-Type Contractions in Partially Ordered B-Metric Spaces”.
Dong Thap University Journal of Science
, no. 19, Apr. 2016, pp. 67-74, doi:10.52714/dthu.19.4.2016.338.