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Kriewel, S.; Klas, C.P.; Schaefer, A.; Fuhr, N.: DAFFODIL : strategic support for user-oriented access to heterogeneous digital libraries (2004)
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Lossau, N.: Search engine technology and digital libraries : libraries need to discover the academic internet (2004)
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Summann, F.; Lossau, N.: Search engine technology and digital libraries : moving from theory to practice (2004)
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