Hiroshi Ishida Hidenao Tanaka Haruki Taniguchi Toyosaka Moriizumi Mobile robot navigation using vision and olfaction to search for a gas/odor source. 231-238 2006 20 Auton. Robots 3 http://dx.doi.org/10.1007/s10514-006-7100-5 db/journals/arobots/arobots20.html#IshidaTTM06