Geodesic
Integrable systems, shuffle algebras, and Bethe equations
Trudy Moskovskogo matematičeskogo obŝestva, Trudy Moskovskogo Matematicheskogo Obshchestva, Tome 77 (2016) no. 2, pp. 251-306

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We speak about the part of integrable system theory dealing with conformal theory and $ W$-algebras (ordinary and deformed). Some new approaches to finding Bethe equations that describe the spectrum of Hamiltonians of these quantum integrable systems are developed. The derivation of the Bethe equations is based on the technique of shuffle algebras arising in quantum group theory. 
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     author = {B. L. Feigin},
     title = {Integrable systems, shuffle algebras, and {Bethe} equations},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {251--306},
     publisher = {mathdoc},
     volume = {77},
     number = {2},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_2016_77_2_a3/}
}
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B. L. Feigin. Integrable systems, shuffle algebras, and Bethe equations. Trudy Moskovskogo matematičeskogo obŝestva, Trudy Moskovskogo Matematicheskogo Obshchestva, Tome 77 (2016) no. 2, pp. 251-306. http://geodesic.mathdoc.fr/item/MMO_2016_77_2_a3/