Hecke algebras and shellings of Bruhat intervals
Compositio Mathematica, Tome 89 (1993) no. 1, pp. 91-115. 
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     number = {1},
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     mrnumber = {1248893},
     zbl = {0817.20045},
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     url = {http://www.numdam.org/item/CM_1993__89_1_91_0/}
}
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Dyer, M. J. Hecke algebras and shellings of Bruhat intervals. Compositio Mathematica, Tome 89 (1993) no. 1, pp. 91-115. http://www.numdam.org/item/CM_1993__89_1_91_0/

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