Ronny Salim Lim Hung Manh La Zeyong Shan Weihua Sheng Developing a crack inspection robot for bridge maintenance. 6288-6293 2011 ICRA http://dx.doi.org/10.1109/ICRA.2011.5980131 conf/icra/2011 db/conf/icra/icra2011.html#LimLSS11