Technical Efficiency and Influencing Factors of Facility Vegetable Production in China: A Case Study of Tomato and Cucumber
YU Liyan, MU Yueying
Journal of Beijing University of Aeronautics and Astronautics Social Sciences Edition . 2019, (6): 92 -97 .  DOI: 10.13766/j.bhsk.1008-2204.2018.0146