@article{DBLP:journals/gis/JiangL11,
author = {Bin Jiang and
Xintao Liu},
title = {Computing the fewest-turn map directions based on the connectivity
of natural roads},
journal = {International Journal of Geographical Information Science},
volume = {25},
number = {7},
year = {2011},
pages = {1069-1082},
ee = {http://dx.doi.org/10.1080/13658816.2010.510799},
bibsource = {DBLP, http://dblp.uni-trier.de}
}