%0 Journal Article %A Mozgawa, Witold %T Bar Billiards and Poncelet's Porism %J Rendiconti del Seminario Matematico della Università di Padova %D 2008 %P 157-166 %V 120 %I Seminario Matematico of the University of Padua %U http://www.numdam.org/item/RSMUP_2008__120__157_0/ %G en %F RSMUP_2008__120__157_0