8Jared Keengwe,Jung-Jin Kang. A triangtllar prism modeh Using.
9Xu Iei, Clau Pahl. An evaluation technique for Conlenl in'Leraction in web-based teachin and learnlng environments [DB/OL]. The 3rcl IEEE International Conference on Advanced Learning Technologies.
10Vellido A., I,isboa P.J.G, Vaughan J.NeuraI networks in business a survery of applieations(1992-1998) [J].Fxperl Systems i tl "t lea- lions, 1999, 17( 1 ) :51-70.