On the minimization of total weighted flow time with identical and uniform parallel machines. - Meral Azizoglu; Ömer Kirca (Eur. J. Oper. Res., 1999)

A branch and bound algorithm to minimize the total weighted flowtime for the two-stage assembly scheduling problem. - Ali Tozkapan; Ömer Kirca; Chia-Shin Chung (Comput. Oper. Res., 2003)

A branch and bound algorithm to minimize the total tardiness for m. - Chia-Shin Chung; James Flynn; Ömer Kirca (Eur. J. Oper. Res., 2006)

A multi-item newsvendor problem with preseason production and capacitated reactive production. - Chia-Shin Chung; James Flynn; Ömer Kirca (Eur. J. Oper. Res., 2008)