M. Patel, A. K. Parashar, G. Darwhekar, R. K. Nema, and R. K. Maheshwari, “New Titrimetric Estimation of Flurbiprofen Tablets Using Ibuprofen Sodium as Hydrotropic Agent”, Cur Res Pharm Sci, vol. 3, no. 4, pp. 144-147, Dec. 2013.