Malekii Vishkaeii R, Daneshian B, Hosseinzadeh Lotfi F. Modifying the convexity condition in Data Envelopment Analysis (DEA). Nexo Scientific Journal [Internet]. 2020 Dec. 31 [cited 2024 Nov. 21];33(02):454-67. Available from: https://camjol.info/index.php/NEXO/article/view/10784