%0 Journal Article %A E. A. Avksentyev %T The Great Emch Closure Theorem and a combinatorial proof of Poncelet's Theorem %J Sbornik. Mathematics %D 2015 %P 1509-1523 %V 206 %N 11 %U http://geodesic.mathdoc.fr/item/SM_2015_206_11_a0/ %G en %F SM_2015_206_11_a0