Freeling, P., Davis, R. H., Goves, J. R., Burton, R. H., & Orme-Smith, E. A. (1987). Control of hypertension in elderly patients with felodipine and metoprolol: A double-blind, placebo-controlled clinical trial.

Freeling, P., R H. Davis, J R. Goves, R H. Burton, and E A. Orme-Smith. Control of Hypertension in Elderly Patients With Felodipine and Metoprolol: A Double-blind, Placebo-controlled Clinical Trial. 1987.

Freeling, P., et al. Control of Hypertension in Elderly Patients With Felodipine and Metoprolol: A Double-blind, Placebo-controlled Clinical Trial. 1987.