Aggregate production planning with multiple objectives in a fuzzy environment. - Reay-Chen Wang; Hsiao-Hua Fang (Eur. J. Oper. Res., 2001)

An Improved Particle Swarm Pareto Optimizer with Local Search and Clustering. - Ching-Shih Tsou; Hsiao-Hua Fang; Hsu-Hwa Chang; Chia-Hung Kao (SEAL, 2006)