On the (non-)contractibility of the order complex of the coset poset of an alternating group
Rendiconti del Seminario Matematico della Università di Padova, Tome 129 (2013), pp. 35-46. 
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     title = {On the (non-)contractibility of the order complex of the coset poset of an alternating group},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {35--46},
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Patassini, Massimiliano. On the (non-)contractibility of the order complex of the coset poset of an alternating group. Rendiconti del Seminario Matematico della Università di Padova, Tome 129 (2013), pp. 35-46. http://www.numdam.org/item/RSMUP_2013__129__35_0/

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