@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/}
}