@incollection{Choi07, author = {Soo-Yeong Yi and Byoung-Wook Choi}, title = {Autonomous Navigation of Indoor Mobile Robot Using Global Ultrasonic System}, booktitle = {Mobile Robots}, publisher = {IntechOpen}, address = {Rijeka}, year = {2007}, editor = {Sascha Kolski}, chapter = {17}, doi = {10.5772/4781}, url = {https://doi.org/10.5772/4781} }