1. ABO blood groups and gastro-intestinal disease;Aird, I.,1961
2. British Medical;Journal; Any questions? Excessive glutinous saliva,1961
3. Chuttani, P. N., and Saigal, A. K. (1958). J. Ass. Phycns India, 6, 347-349.
4. Studies on peptic ulcer in South India. I. Introduction and clinical study of 258 cases;Dogra, J.R.;Ind. J. med. Res,1940
5. Occupational factors in the aetiology of gastric and duodenal ulcers;Doll, R.; Jones, F.Avery; Buckatzsch, M.M.;Spec. Rep. Ser. med. Res. Coun. (Lond.),1951