Brito, José R.F., Nelson Mores, Maria Aparecida V.P. Brito, Itamar A. Piffer, and Clair Lorenzetti. 2014. “Efficiency of Two Vaccination Schemes Against Atrophic Rhinitis in Swine Herds”. Pesquisa Agropecuaria Brasileira 18 (6):657-62. https://doi.org/10.1590/S1678-3921.pab1983.v18.15329.