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@article{PORMA_1942__3_4_114611, author = {Varennes e Mendon\c{c}a, P. de}, title = {Orthogonality and analysis of variance}, journal = {Portugaliae mathematica}, pages = {234--252}, publisher = {mathdoc}, volume = {3}, number = {4}, year = {1942}, mrnumber = {0007585}, zbl = {0027.41202}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1942__3_4_114611/} }
Varennes e Mendonça, P. de. Orthogonality and analysis of variance. Portugaliae mathematica, Tome 3 (1942) no. 4, pp. 234-252. http://geodesic.mathdoc.fr/item/PORMA_1942__3_4_114611/