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@article{PORMA_1965__24_3_114962, author = {Mayer, J.}, title = {Generalizations of consistency and absolute equivalence of matrix methods}, journal = {Portugaliae mathematica}, pages = {163--167}, publisher = {mathdoc}, volume = {24}, number = {3}, year = {1965}, mrnumber = {0214966}, zbl = {0144.31102}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1965__24_3_114962/} }
Mayer, J. Generalizations of consistency and absolute equivalence of matrix methods. Portugaliae mathematica, Tome 24 (1965) no. 3, pp. 163-167. http://geodesic.mathdoc.fr/item/PORMA_1965__24_3_114962/