Michael Westergaard Lars Michael Kristensen Gerth Stølting Brodal Lars Arge The ComBack Method - Extending Hash Compaction with Backtracking. 445-464 2007 conf/apn/2007 ICATPN http://dx.doi.org/10.1007/978-3-540-73094-1_26 db/conf/apn/icatpn2007.html#WestergaardKBA07