Fulton, R. W.; Pearson, N. J.; Potter, M. T.; Springer, W. T.; Downing, M. M.; Hagstad, H. V.; Nicholson, S. S. Infectious Bovine Rhinotracheitis Virus and Parainfluenza-3 Virus in the Nasal Flora of Dairy Calves. Bov. pract. 1982, 1982, 59-62.