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@article{PORMA_1961__20_1_114850, author = {Schwerdtfeger, Hans}, title = {On the adjugate of a matrix}, journal = {Portugaliae mathematica}, pages = {39--41}, publisher = {mathdoc}, volume = {20}, number = {1}, year = {1961}, mrnumber = {0125853}, zbl = {0098.01203}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1961__20_1_114850/} }
Schwerdtfeger, Hans. On the adjugate of a matrix. Portugaliae mathematica, Tome 20 (1961) no. 1, pp. 39-41. http://geodesic.mathdoc.fr/item/PORMA_1961__20_1_114850/