Das S, Patel G. Assessment of Performance of Pharmaceutical Firms making Drugs for Specific Diseases Prevalent in India: A Data Envelopment Analysis Approach. IJMIT [Internet]. 2013 Oct. 23 [cited 2025 Aug. 28];6(2):763-75. Available from: https://www.rajpub.com/index.php/ijmit/article/view/733