Sieverts, E.G.; Figdor, J.; Bakker, S.; Hofstede, M.: Software for information storage and retrieval tested, evaluated and compared : Pt.3: End-user software (1992)
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Bakker, S.; Bleeker, A.; Van der Burg, J.; Dijkman, J.; Hogenaar, A.; Van Ramshorst, G.: Medline on CD-ROM : a comparison (1989)
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