1. Congress on Chagas' disease;Bull, of the 1st Int,1959
2. Bra. Gastroent.;Cong,1960
3. Digestive form of Chagas' disease, a survey;Siffert de Paula e Silva;Amer. J. Dig. Dis.,1958
4. Chagas' disease, a possible cause of megaesophagus and megacolon;Jung;Amer. J. Gastroent.,1959
5. Aperistalsis of the esophagus and colon (megaesophagus and megacolon) etiologically related to Chagas' disease;Ferreira-Santos;Amer. J. Dig. Dis.,1961