Approximating Reversal Distance for Strings with Bounded Number of Duplicates.

Petr Kolman Approximating Reversal Distance for Strings with Bounded Number of Duplicates. 580-590 2005 conf/mfcs/2005 MFCS http://dx.doi.org/10.1007/11549345_50 db/conf/mfcs/mfcs2005.html#Kolman05