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@article{AUCMP_1982__23_1_a1, author = {Je\v{z}ek, J.}, title = {Free groupoids in varieties determined by a short equation}, journal = {Acta Universitatis Carolinae. Mathematica et Physica}, pages = {3--24}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1982}, mrnumber = {0678473}, zbl = {0527.08006}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AUCMP_1982__23_1_a1/} }
Ježek, J. Free groupoids in varieties determined by a short equation. Acta Universitatis Carolinae. Mathematica et Physica, Tome 23 (1982) no. 1, pp. 3-24. http://geodesic.mathdoc.fr/item/AUCMP_1982__23_1_a1/