Duarte, J.B. et al. 2001. Estimators of variance components in the augmented block design with new treatments from one or more populations. Pesquisa Agropecuaria Brasileira. 36, 9 (Sep. 2001), 1155–1167. DOI:https://doi.org/10.1590/S1678-3921.pab2001.v36.6233.