@article{119970, author = {Stanislav \v Zidek}, title = {Pseudoringe}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, volume = {12}, year = {1972}, pages = {67-75}, zbl = {0387.16019}, mrnumber = {0349770}, language = {de}, url = {http://dml.mathdoc.fr/item/119970} }
Židek, Stanislav. Pseudoringe. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 12 (1972) pp. 67-75. http://gdmltest.u-ga.fr/item/119970/
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