The fleet size and mix vehicle routing problem with time windows. - Fuh-Hwa Liu; Sheng-Yuan Shen (J. Oper. Res. Soc., 1999)

Control Strategy for Dispatching Multi-load Automated Guided Vehicles in a Deadlock-Free Environment. - Fuh-Hwa Liu; Pi-Chuan Hung (J. Math. Model. Algorithms, 2002)