Sukprasert, P., P. Kumam, D. Thongtha, and K. Sombut. “Fixed Point Result on Generalized \((\psi,\phi)_s\)-Contractive Mappings in Rectangular \(b\)-Metric Spaces”. Communications in Mathematics and Applications, vol. 7, no. 3, Nov. 2016, pp. 207-16, doi:10.26713/cma.v7i3.422.