FIRMENICH, S. , ROSSI, G. , URBIETA, M. , CHALLIOL, C. , NANARD, J. , NANARD, M. and ARAUJO, J. 2010. ENGINEERING CONCERN-SENSITIVE NAVIGATION STRUCTURES. CONCEPTS, TOOLS AND EXAMPLES. Journal of Web Engineering. 9, 2 (Feb. 2010), 157–185.