Morgan, R. L., Isaacson, R. E., Moon, H. W., Brinton, C. C., & To, C. C. (1978). Immunization of suckling pigs against enterotoxigenic Escherichia coli-induced diarrheal disease by vaccinating dams with purified 987 or K99 pili: Protection correlates with pilus homology of vaccine and challenge.

Morgan, R L., R E. Isaacson, H W. Moon, C C. Brinton, and C C. To. Immunization of Suckling Pigs against Enterotoxigenic Escherichia Coli-induced Diarrheal Disease By Vaccinating Dams With Purified 987 or K99 Pili: Protection Correlates With Pilus Homology of Vaccine and Challenge. 1978.

Morgan, R L., et al. Immunization of Suckling Pigs against Enterotoxigenic Escherichia Coli-induced Diarrheal Disease By Vaccinating Dams With Purified 987 or K99 Pili: Protection Correlates With Pilus Homology of Vaccine and Challenge. 1978.