@article{articled2ec3050,
title   = {Comparison of the effects of sublingual nifedipine and isosorbide dinitrate on esophageal emptying in patients with chagasic achalasia},
author = {Figueiredo, M C A and Oliveira, R. B. and Iazigi, Nassim},
year = {1992},
journal   = {Alimentary Pharmacology and Therapeutics}
}