Julio Abascal Myriam Arrue Inmaculada Fajardo Nestor Garay-Vitoria Jorge Tomás The use of guidelines to automatically verify Web accessibility. 71-79 2004 3 Univers. Access Inf. Soc. 1 https://doi.org/10.1007/s10209-003-0069-3 db/journals/uais/uais3.html#AbascalAFGT04