Jahanshahloo G, Hosseinzadeh Lotfi F, Maddahi R, Jafari Y. Efficiency and benchmarking in the presence of undesirable (bad) outputs: A DEA approach. IJAMR [Internet]. 2012 May 25 [cited 2024 May 3];1(2):178-8. Available from: https://www.sciencepubco.com/index.php/ijamr/article/view/44