Larson, R.L., Pierce, V.L., Grotelueschen, D.M. and Wittum, T.E. 2002. Economic evaluation of beef cowherd screening for cattle persistently-infected with bovine viral diarrhea virus. The Bovine Practitioner. 36, 2 (Jun. 2002), 106–112. DOI:https://doi.org/10.21423/bovine-vol36no2p106-112.