Extension of the aggregation of preference rankings using an optimistic-pessimistic approach. - Byeong Seok Ahn; Jong Hyen Kim; Dong Hoon Lee (Comput. Ind. Eng., 2019)

Extended VIKOR method using incomplete criteria weights. - Jong Hyen Kim; Byeong Seok Ahn (Expert Syst. Appl., 2019)

Volume-based ranking method for a ranked voting system. - Jong Hyen Kim; Byeong Seok Ahn (Int. Trans. Oper. Res., 2022)