Miguel Lozano Francisco Grimaldo Javier Villaplana Towards Reactive Navigation and Attention Skills for 3D Intelligent Characters. 209-216 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2687&spage=209 2003 conf/iwann/2003-2 IWANN (2) db/conf/iwann/iwann2003-2.html#LozanoGV03