Rolf H. Möhring Heiko Schilling Birk Schütz Dorothea Wagner Thomas Willhalm Partitioning graphs to speedup Dijkstra's algorithm. 2006 11 ACM Journal of Experimental Algorithmics http://doi.acm.org/10.1145/1187436.1216585 db/journals/jea/jea11.html#MohringSSWW06