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@article{AUPO_1972__12_1_a9, author = {\v{Z}idek, Stanislav}, title = {Pseudoringe}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, pages = {67--75}, publisher = {mathdoc}, volume = {12}, number = {1}, year = {1972}, mrnumber = {0349770}, zbl = {0387.16019}, language = {ge}, url = {http://geodesic.mathdoc.fr/item/AUPO_1972__12_1_a9/} }
Židek, Stanislav. Pseudoringe. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 12 (1972) no. 1, pp. 67-75. http://geodesic.mathdoc.fr/item/AUPO_1972__12_1_a9/