Kozicki, L.E., Bostedt, H. and Arnstadt, K.I. (2014) “Progesterone profiles in the puerperium period of dairy cows analized by radioimmunoassay and enzymimmunoassay”, Pesquisa Agropecuaria Brasileira, 19(4), pp. 507–510. doi:10.1590/S1678-3921.pab1984.v19.15580.