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Lim, E.-P.; Liu, Z.; Yin, M.; Goh, D.H.-L.; Theng, Y.-L.; Ng, W.K.: On organizing and accessing geospatial and georeferenced Web resources using the G-Portal system (2005)
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Meyyappan, N.; Foo, F.; Chowdhury, G.G.: Design and evaluation of a task-based digital library for the academic community (2004)
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