Silva, Norma Moraes da. “Studies on Paratuberculosis. IV. Experimental Infection of Sheep With Mycobacterium Paratuberculosis of Bovine Origin”. Pesquisa Agropecuaria Brasileira, vol. 3, no. 1, Apr. 2014, pp. 285-9, https://doi.org/10.1590/S1678-3921.pab1968.v3.17970.