Multi-period lot-sizing with supplier selection using achievement scalarizing functions. - Ozden Ustun; Ezgi Aktar Demirtas (Comput. Ind. Eng., 2008)

Analytic network process and multi-period goal programming integration in purchasing decisions. - Ezgi Aktar Demirtas; Ozden Ustun (Comput. Ind. Eng., 2009)

Multi-choice conic goal programming model-based network data envelopment analysis. - Derya Deliktas; Ozden Ustun; Ezgi Aktar Demirtas; Rifat Aykut Arapoglu (RAIRO Oper. Res., 2024)