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Sieverts, E.G.; Hofstede, M.: Software for information storage and retrieval tested, evaluated and compared : Pt.1: General introduction (1991) 0.05

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Source: Electronic library. 9(1991), S.145-153

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) 0.04

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Source: Electronic library. 10(1992), S.5-19

Sieverts, E.G.; Hofstede, M.; Haak, P.H.; Nieuwenhuysen, P.; Scheepsma, G.M.A.; Veeger, L.; Vis, G.C.: Software for information storage and retrieval tested, evaluated and compared : Pt. 2: Classical retrieval systems (1991) 0.03

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Source: Electronic library. 9(1991), S.301-316

Hofstede, M.: Zoeken in PiCarta : de proef op de som (1998) 0.03
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Abstract

The proliferation of electronic databases and reduced library collections require researchers to be familiar with an increasing range of bibliographical resources. To assist users in searching multiple databases the PICA network in the Netherlands has developed PiCarta as a single information source. The servie enables users to access bibliographical databases and electronic journals using Boolean logic, fuzzy operators, and subject weighting. The system is, however, dependent upon indexing methods used in original sources

Sieverts, E.G.; Hofstede, M.; Nieuwland, A.; Groeneveld, C.; Zwart, B. de: Software for information storage and retrieval tested, evaluated and compared : pt.6: various additional programs (1993) 0.02

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Source: Electronic library. 11(1993) no.2, S.73-92

Sieverts, E.G.; Hofstede, M.: Software for information storage and retrieval, evaluated and compared : pt.7: what to choose, or the purpose of it all (1994) 0.02

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Source: Electronic library. 12(1994) no.1, S.21-26

Sieverts, E.G.; Hofstede, M.; Groeniger, B.O.: Software for information storage and retrieval tested, evaluated and compared : pt.4: indexing and full-text retrieval programs (1992) 0.02

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Source: Electronic library. 10(1992) no.4, S.195-207

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