Yanshuang Zhang and Byungho Jeong, A DEA Model for Performance Evaluation in The Presence of Time Lag Effect. journal = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology. September 2012, vol. 69(9). 1868 - 1871 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/3127.