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@article{10_4064_cm_14_1_33_38, author = {Jerzy {\L}o\'s}, title = {Direct sums in general algebra}, journal = {Colloquium Mathematicum}, pages = {33--38}, publisher = {mathdoc}, volume = {14}, number = {1}, year = {1966}, doi = {10.4064/cm-14-1-33-38}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-14-1-33-38/} }
Jerzy Łoś. Direct sums in general algebra. Colloquium Mathematicum, Tome 14 (1966) no. 1, pp. 33-38. doi : 10.4064/cm-14-1-33-38. http://geodesic.mathdoc.fr/articles/10.4064/cm-14-1-33-38/
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