O'Connor, A., Martin, S. W., Nagy, E., Menzies, P., & Harland, R. (2001). The relationship between the occurrence of undifferentiated bovine respiratory disease and titer changes to bovine coronavirus and bovine viral diarrhea virus in 3 Ontario feedlots.

O'Connor, A., S W. Martin, E. Nagy, P. Menzies, e R. Harland. The Relationship between the Occurrence of Undifferentiated Bovine Respiratory Disease and Titer Changes to Bovine Coronavirus and Bovine Viral Diarrhea Virus in 3 Ontario Feedlots. 2001.

O'Connor, A., et al. The Relationship between the Occurrence of Undifferentiated Bovine Respiratory Disease and Titer Changes to Bovine Coronavirus and Bovine Viral Diarrhea Virus in 3 Ontario Feedlots. 2001.