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1.
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Browsing functions in three-dimensional space for digital libraries Kakimoto, Toshihiro - Kambayashi, Yahiko
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2.
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SPIRE: a digital library for scientific information Bergman, Lawrence D. - Castelli, Vittorio - Li, Chung-Shen - Smith, John R.
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3.
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An adaptative visual environment for digital libraries Costabile, M. F. - Esposito, Floriana - Semeraro, Giovanni - Fanizzi, Nicola
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