A two-phase possibilistic linear programming methodology for multi-objective supplier evaluation and order allocation problems. - Dogan Özgen; Semih Önüt; Bahadir Gülsün; Umut Rifat Tuzkaya; Gülfem Tuzkaya (Inf. Sci., 2008)

An approach for analysing transportation costs and a case study. - Bahri Sahin; Huseyin Yilmaz; Yasin Ust; Ali Fuat Guneri; Bahadir Gülsün (Eur. J. Oper. Res., 2009)

An integrated fuzzy multi-criteria decision making methodology for material handling equipment selection problem and an application. - Gülfem Tuzkaya; Bahadir Gülsün; Cengiz Kahraman; Dogan Özgen (Expert Syst. Appl., 2010)

A SCOR based approach for measuring a benchmarkable supply chain performance. - Batuhan Kocaoglu; Bahadir Gülsün; Mehmet Tanyas (J. Intell. Manuf., 2013)

A comparative analysis of meta-heuristic approaches for facility layout design problem: a case study for an elevator manufacturer. - Gülfem Tuzkaya; Bahadir Gülsün; Umut Rifat Tuzkaya; Semih Önüt; Ender Bildik (J. Intell. Manuf., 2013)

Combining possibilistic linear programming and fuzzy AHP for solving the multi-objective capacitated multi-facility location problem. - Dogan Özgen; Bahadir Gülsün (Inf. Sci., 2014)