1. Propranolol in hypertension;Richards, F.A.;American Journal of Cardiology,1966
2. 1968. Propranolol in hypertension;Tewari, S.N.; Grant, R.H.E.;Postgraduate Medical Journal
3. Controlled trial of propranolol in hypertension;Zacharias, F.J.; Cowen, K.J.;British Medical; Propranolol in hypertension,1970