Sudsuansee, T., Wichapa, N., Wichapa, N., Lawong, A. and Khotsaeng, N. 2022. A Novel Hybrid Method Based on Three-Stage Extraction and DEA-CCR Models for Selecting the Optimal Conditions for Citronella Oil Extraction. Applied Science and Engineering Progress. 15, 4 (Sep. 2022), 5598. DOI:https://doi.org/10.14416/j.asep.2021.11.007.