Another similarity coefficient for the p-median model in group technology. - Hark Hwang; Yong Hui Oh (Int. J. Manuf. Technol. Manag., 2003)

A dock-door assignment problem for the Korean mail distribution center. - Yong Hui Oh; Hark Hwang; Chun Nam Cha; Suk Lee (Comput. Ind. Eng., 2006)

Deterministic inventory model for recycling system. - Yong Hui Oh; Hark Hwang (J. Intell. Manuf., 2006)

Retailing policy for perishable item sold from two bins with mixed issuing policy. - Sungjae Han; Yong Hui Oh; Hark Hwang (J. Intell. Manuf., 2012)