Grammatiki Tsaganou Maria Samarakou Panagiotis Blitsas Maria Grigoriadou Enhancing Web Document Accessibility by Authoring Texts and Text Comprehension Activities. 597-606 2009 HCI (7) http://dx.doi.org/10.1007/978-3-642-02713-0_63 conf/hci/2009-7 db/conf/hci/hci2009-7.html#TsaganouSBG09