Correa Valencia, N. M., Ramírez, N. F., Bülte M. and Fernández Silva, J. A. (2017) “Fecal culture and two fecal-PCR methods for the diagnosis of Mycobacterium avium subsp. paratuberculosis in a seropositive herd”, Revista Colombiana de Ciencias Pecuarias, 30(2), pp. 101–115. doi: 10.17533/udea.rccp.v30n2a02.