@article{102241, author = {Alessandra Cherubini and Ada Varisco}, title = {On $E\_k$-rings}, journal = {Czechoslovak Mathematical Journal}, volume = {38}, year = {1988}, pages = {456-463}, zbl = {0673.16009}, mrnumber = {950299}, language = {en}, url = {http://dml.mathdoc.fr/item/102241} }
Cherubini, Alessandra; Varisco, Ada. On $E_k$-rings. Czechoslovak Mathematical Journal, Tome 38 (1988) pp. 456-463. http://gdmltest.u-ga.fr/item/102241/
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