Geodesic
Special Elements of the Lattice of Overcommutative Varieties of Semigroups
Matematičeskie zametki, Tome 70 (2001) no. 5, pp. 670-678 
B. M. Vernikov. Special Elements of the Lattice of Overcommutative Varieties of Semigroups. Matematičeskie zametki, Tome 70 (2001) no. 5, pp. 670-678. http://geodesic.mathdoc.fr/item/MZM_2001_70_5_a2/
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Voir la notice de l'article provenant de la source Math-Net.Ru

The distributive, codistributive, standard, costandard, and neutral elements of the lattice of overcommutative varieties of semigroups are completely described.

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