%0 Conference Proceedings %F RBBCP-acsd09 %A Raclet, J.-B. %A Badouel, E. %A Benveniste, A. %A Caillaud, B. %A Passerone, R. %T Why are modalities good for Interface Theories? %B Proc. of the 9th International Conference on Application of Concurrency to System Design (ACSD'09) %P 199-127 %I IEEE %D 2009