Jens Scharnow Karsten Tinnefeld Ingo Wegener Fitness Landscapes Based on Sorting and Shortest Paths Problems. 54-63 2002 conf/ppsn/2002 PPSN http://link.springer.de/link/service/series/0558/bibs/2439/24390054.htm db/conf/ppsn/ppsn2002.html#ScharnowTW02