Martins Filho, J. .; Castro, A. F. P. de .; Serafim, M. B. .; Gomes, J. A. . Anti-Thermolabile Escherichia Coli Enterotoxin and Anti-Colonization Factor Antibodies Found in Human Colostrum. Rev. Inst. Med. Trop. São Paulo 1980, 22 (1), 7-14.