6[5]Linggood,M.A.and P.Poter.Antibody induced elimination of the plasmid controlled K88 adhesin factor from a porcine enteropathagen.Immunology,1978(35):125~127
7[6]Moon,H.W.and T.O.bunn.Vaccines for preventing enterotoxigenic Escherichiacoli infection in farm animals.Vaccine,1993(11):213~220