Approximation Preserving Reductions among Item Pricing Problems. - Ryoso Hamane; Toshiya Itoh; Kouhei Tomita (IEICE Trans. Inf. Syst., 2009)

Approximation Algorithms for the Highway Problem under the Coupon Model. - Ryoso Hamane; Toshiya Itoh; Kouhei Tomita (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

Adaptive Control of Dominance Area of Solutions in Evolutionary Many-Objective Optimization. - Kouhei Tomita; Minami Miyakawa; Hiroyuki Sato (New Math. Nat. Comput., 2015)