Geodesic
Deformed Virasoro algebras and $\mathcal W$-algebras from elliptic algebras
Teoretičeskaâ i matematičeskaâ fizika, Tome 123 (2000) no. 2, pp. 311-322
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Deformed $\mathcal W_n$-algebras in the classical case (i.e., Poisson structures) and in the quantum case (exchange algebras) are constructed from the elliptic algebras $\mathcal A_{q,p}(\widehat{sl}(N)_c)$. 
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P. Sorba. Deformed Virasoro algebras and $\mathcal W$-algebras from elliptic algebras. Teoretičeskaâ i matematičeskaâ fizika, Tome 123 (2000) no. 2, pp. 311-322. http://geodesic.mathdoc.fr/item/TMF_2000_123_2_a12/

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