1. Wastell C: Incidence, appearances and complications. In Wastell C (Editor): Chronic Duodenal Ulcer. New York, Appleton-Century-Crofts, 1972, pp 3–18
2. Cooke AR: Drugs and peptic ulceration. In Sleisenger MH, Fordtran JS (Editors): Gastrointestinal Disease: Pathophysiology, Diagnosis, Management. Philadelphia, WB Saunders Co, 1973, pp 642–656
3. PATHOGENESIS OF GASTRIC ULCERATION
4. Increased Reflux of Bile Into the Stomach in Patients with Gastric Ulcer