1. Immunization of calves against enterotoxigenic colibacillosis by vaccinating dams with purified K 99 antigen and whole cell bacterins;Acres;Infect. Immun.,1979
2. Antigen-extinction profile in pregnant cows, using a K 99-containing whole-cell bacterin to induce passive protection against enterotoxigenic colibacillosis of calves;Acres;Am. J. Vet. Res.,1982
3. Infektionsrisiken für das Neugeborene;Bachmann;Fortschr. Vet. Med.,1980
4. Aktive Mutterschutzimpfung: Passive Immunisierung von Neugeborenen;Bachmann;Tierärztl. Umsch.,1982
5. Possibilities and limitations of oral immunization against Escherichia coli in piglets and calves;Baljer;Fortschr. Vet. Med.,1979