Mohand-Said Hacid Nicolas Spyratos Yuzuru Tanaka Guest editors' introduction: special issue for ISIP 2005. 109-110 2008 31 J. Intell. Inf. Syst. 2 http://dx.doi.org/10.1007/s10844-008-0058-3 db/journals/jiis/jiis31.html#HacidST08