TY - JOUR TI - Common Coupled Fixed Point Theorems for Generalized Nonlinear Contractions on Metric Spaces Involving a Graph AU - YOLAÇAN, E. AU - DEBNATH, P. AU - AKTÜRK, M.A. JO - Sigma Journal of Engineering and Natural Sciences PY - 2018 VL - 36 SP - 419 EP - 432 DO - ER -