Iemma, Antonio Francisco, and Humberto de Campos. “Variance of the Classical Contrats at the Split-Plot Experiments in Balanced Incomplete Block Designs”. Ciência e Natura 3, no. 3 (December 12, 1981): 21–28. Accessed February 22, 2025. https://periodicos.ufsm.br/cienciaenatura/article/view/24874.