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<referencetext xmlns="http://eprints.org/ep2/data/2.0">Antonella De Robbio, Dario Maguolo, Alberto Marini. Scientific and General Subject Classifications in the Digital World High Energy Physics Libraries Webzine, Issue 5, November 2001.

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Alberto Marini. Text Processing for Presentation and manipulation of Mathematical Resources. Paper presented at the Workshop “Electronic Media in Mathematics”, Coimbra, Portugal), September 13-15 2001. http://www.mat.uc.pt/EMM/index.html</referencetext>
