%0 Journal Article %F Marchand98c %A Marchand, E. %A Rutten, E. %A Marchand, H. %A Chaumette, F. %T Specifying and verifying active vision-based robotic systems with the Signal environment %J Int. Journal of Robotics Research %V 17 %N 4 %P 418-432 %8 April %D 1998