Interval type-2 hesitant fuzzy Entropy-based WASPAS approach for aircraft type selection. - Muhammet Deveci; Sultan Ceren Öner; Muharrem Enis Ciftci; Ender Özcan; Dragan Pamucar (Appl. Soft Comput., 2022)

Extended flexible capacity planning methodology with flight network contribution to the airline fleet assignment problem. - Yusuf Enki; Vildan Özkir; Ceyda Güngör Sen; Muharrem Enis Ciftci (Expert Syst. Appl., 2024)

Aircraft type selection using fuzzy trigonometric based OPA and RAFSI model. - Muhammet Deveci; Muharrem Enis Ciftci; Mehtap Isik; Dragan Pamucar; Xin Wen 006; Tachia Chin; Seifedine Nimer Kadry (Inf. Sci., 2024)

Integrated optimisation model for airline bank structure and fleet assignment problem. - Muharrem Enis Ciftci; Vildan Özkir (Ann. Oper. Res., 2024)

A decision support system for reducing the strategic risk in the schedule building process for network carrier airline operations. - Muhammet Deveci; Rosa M. Rodríguez 001; Álvaro Labella; Muharrem Enis Ciftci (Ann. Oper. Res., 2025)