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| Pagina Oficial Multimedia Home Platform | http://www.mhp.org/ |
| Estandar Digital Video Broadcasting | http://www.dvb.org |
| Laboratorio de TV Digital Interactiva | http://idtv.det.uvigo.es/index-en.html |
| TV-Anytime | www.tv-anytime.org |
| Reporte Final sobre T-learning | http://www.pjb.co.uk/t-learning.htm |
