%0 Journal Article %A Janusz MierczyƄski %T Smoothness of unordered curves in two-dimensional strongly competitive systems %J Applicationes Mathematicae %D 1999 %P 449-455 %V 25 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-25-4-449-455/ %R 10.4064/am-25-4-449-455 %G en %F 10_4064_am_25_4_449_455