Krug, M.; Hausleithner, D.; Taddey, R.; Volkers, P.; Kobe, B.; Cussler, K. [Serological Test Methods As Replacement for Infection Trials in Piglets to Test the Potency] of E. Coli Vaccines for Sows (dams) [Article in German]. ALTEX 2005, 22, 111-116.