Pantoja, J., B. Vallejo, and J. Acosta. “Bovine Paratuberculosis in Puerto Rican Dairy Herds and Its Association With Selected Performance Parameters.”. The Journal of Agriculture of the University of Puerto Rico, vol. 94, no. 3-4, June 2010, pp. 247-54, doi:10.46429/jaupr.v94i3-4.2721.