gupta, umang gupta kumar, and rohit kapoor. “An Inquiry into the Productivity of the Indian Pharmaceutical Industry: Application of Data Envelopment Analysis”. Brazilian Journal of Operations & Production Management 14, no. 2 (July 23, 2017): 145–152. Accessed March 28, 2024. https://bjopm.org.br/bjopm/article/view/V14N2A2.