9KAYE H S. Disability and the digital divide: accounting for lower levels of computer and internet usage among people with disabilities [ EB/OL]. [ 2008-04-25 ]. http : //apha. confex. com/apha/131am/techprogram/paper_ 63433. htm.
10Introduction to Web accessibility [ EB/OL]. [2008-02-16]. http: //www. w3. org/WAI/intro/accessibility. php.