1. Orale, aktive Immunisierung neugeborener Ferkel gegen Escherichia coli: Wirksamkeitsnachweis im Darmligaturtest.;Baljer;Zbl. Vet. Med. B,1975 a
2. Orale Immunisierung neugeborener Ferkel gegen Escherichia coli.;Baljer;Tierärztl. Prax.,1975 b
3. Prenatal immunisation and protection of the newborn ovine and bovine fetuses vaccinated with Escherichia coli antigen by the oral route and exposed to challenge inoculum at birth.;Conner;Am. J. Vet. Res.,1973
4. In utero immunisation of calves against colisepticemia.;Gay;Am. J. Vet. Res.,1975