de Oliveira, M.D.S., Vieira, P. de F. and Banzatto, D.A. (1995) “Effect of stocking times on bromatologic composition of caged laying hen manure”, Pesquisa Agropecuaria Brasileira, 30(7), pp. 999–1002. doi:10.1590/S1678-3921.pab1995.v30.4389.