Gupta, R. K., N. Makkar, and S. Shamdasani. “Always, Better and Control - Vital, Essential, Desirable Matrix Analysis of the Drug Store of a Tertiary Care Teaching Hospital of North India”. International Journal of Research in Medical Sciences, vol. 7, no. 12, Nov. 2019, pp. 4728-32, doi:10.18203/2320-6012.ijrms20195546.