Ferreira, A. Walter, et al. “ Standardization of Serological Tests in Chagas’ Disease: Immunoenzimatic Test for Screening of Blood Bank Donnors ”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 33, no. 2, Apr. 1991, pp. 123-8, https://revistas.usp.br/rimtsp/article/view/28803.