@article{102396, author = {Bed\v rich Pond\v el\'\i \v cek}, title = {Tolerance modular varieties of semigroups}, journal = {Czechoslovak Mathematical Journal}, volume = {40}, year = {1990}, pages = {441-452}, zbl = {0731.20039}, mrnumber = {1065023}, language = {en}, url = {http://dml.mathdoc.fr/item/102396} }
Pondělíček, Bedřich. Tolerance modular varieties of semigroups. Czechoslovak Mathematical Journal, Tome 40 (1990) pp. 441-452. http://gdmltest.u-ga.fr/item/102396/
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