Accessibility and Usability of Websites Intended for People with Disabilities: A Preliminary Study. - Emilene Zitkus; Aline C. Brigatto; Ana Lya M. Ferrari; Gabriel H. C. Bonfim; Idinei F. P. Carvalho Filho; Thaís D. Reis; Fausto O. Medola; Luis Carlos Paschoarelli (HCI (17), 2016)