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Axtell, R.; Dixon, J.M.: Voyager 2000 : a review of accessibility for persons with visual disabilities (2002)
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Sharma, N.; Butler, B.S.; Irwin, J.; Spallek, H.: Emphasizing social features in information portals : effects on new member engagement (2011)
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Yu, H.: Web accessibility and the law : recommendations for implementation (2002)
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