Yair Dombb Ohad Lipsky Benny Porat Ely Porat Asaf Tsur Approximate Swap and Mismatch Edit Distance. 149-163 2007 conf/spire/2007 SPIRE http://dx.doi.org/10.1007/978-3-540-75530-2_14 db/conf/spire/spire2007.html#DombbLPPT07