1. J.A. Oates, Section V. 33-Antihypertensive Agents and the Drug Therapy of Hypertension, Goodman & Gilman’s the Pharmacological Basis of Therapeutics, Pergamon Press, 9th ed., pp.780–808
2. Pharmaceutical Chemistry of Antihypertensive Agents;Szasz,1991
3. Antihypertensive Drugs;Van Zwieten,1997
4. 1 Pharmacologically Active Pyridazine Derivatives. Part 1
5. 4 Pharmacologically Active Pyridazine Derivatives. Part 2