● Boosinger TR,Thacker HL,Armstrong CH (1985). Campylobacter sputorum subsp mucosalis and Campylobacter hyointestinalis infections in the intestine of gnotobiotic pigs. Am. J. Vet. Res.46, 2152-6. ● Lawson GH,Rowland AC (1974). Intestinal adenomatosis in the pig: a bacteriological study. Res. Vet. Sci.17, 331-6. ● Lawson GHK,Leaver JL,Pettigrew GW,Rowland AC (1981). Some features of Campylobacter sputorum subsp. mucosalis subsp. nov., nom. rev. and their taxonomic significance. Int. J. Syst. Bacteriol.31, 385-391.