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Lever, A.J.: ¬Een basisclassificatie in ontwikkeling : naar coördinatie van de collectievorming en gemeenschappelijke onderwerpsontsluiting bij wetenschappelijke bibliotheken (1988)
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Voorbij, H.: ¬De ontwikkeling van het onderwerpsontsluitingssysteem t.b.v. de Nederlandse Bibliografie (1981)
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Regt, W. F. de; Wijn, J. H. de: Handleiding UDC. Zoekgebieden, constructie, gebruik. Voor de Nederlandse Stichting von Classificatie en andere Ontsluitingsmethoden (NCS) uitgegeven door muusses-purmerend (1981)
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Plaister, J.: PICA : Centrum voor Bibliotheekautomatisering (1987)
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