CANAL, A. M.; CUBILLOS, V.; ZAMORA, J.; REINHARDT, G.; PAREDES, E.; ILDEFONSO, R.; ALBERDI, A. Histopatholocial Lesions in the Small Intestine of Calostrum Deprived Pigs Invoculated With Strains of E. Coli Bearing F4, F5, F6 Y F41 Fimbriaes. Arch med vet 1999, 31, 69-79.