%0 Journal Article %A Petr Kolman %A Tomasz Waleń %T Reversal distance for strings with duplicates: linear time approximation using hitting set %J The electronic journal of combinatorics %D 2007 %V 14 %U http://geodesic.mathdoc.fr/articles/10.37236/968/ %R 10.37236/968 %F 10_37236_968