Kumar, S. S., R. K. Srivastava, and V. Srinivasrao. “DETERMINATION OF 4, 4′-BIS (BROMOMETHYL) BIPHENYL GENOTOXIC IMPURITY IN VALSARTAN DRUG SUBSTANCES BY HPLC”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 8, no. 11, Nov. 2016, pp. 209-15, doi:10.22159/ijpps.2016v8i11.14614.