Raj, N.D., Anbazhagan, S., Babu, K.A., Babu, S.N. and Bhimanadhuni, C.N. 2012. Validated stability indicating gradient RP-HPLC method for the estimation of antihypertensive drugs in bulk and pharmaceutical dosage forms. International Current Pharmaceutical Journal. 1, 11 (Oct. 2012), 336–341. DOI:https://doi.org/10.3329/icpj.v1i11.12058.