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@article{10_4064_cm_29_1_87_91, author = {J. P{\l}onka}, title = {On groups in which idempotent reducts form a chain}, journal = {Colloquium Mathematicum}, pages = {87--91}, publisher = {mathdoc}, volume = {29}, number = {1}, year = {1974}, doi = {10.4064/cm-29-1-87-91}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-29-1-87-91/} }
J. Płonka. On groups in which idempotent reducts form a chain. Colloquium Mathematicum, Tome 29 (1974) no. 1, pp. 87-91. doi : 10.4064/cm-29-1-87-91. http://geodesic.mathdoc.fr/articles/10.4064/cm-29-1-87-91/
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