Li, J., F. Zhang, J. Sun, G. K. Liew, and J. Zuo. “DESIGN OF AN OPTIMIZED FORKLIFT ROUTES FOR A FOUR-DOOR DANGEROUS GOODS MONOLAYER WAREHOUSE THROUGH GENETIC PARTICLE SWARM OPTIMIZATION ALGORITHM”. International Journal of Industrial Engineering: Theory, Applications and Practice, vol. 27, no. 2, June 2020, doi:10.23055/ijietap.2020.27.2.4899.