SCHMIDT, Johannes F.K., 2016. Niklas Luhmann’s Card Index: Thinking Tool, Communication Partner, Publication Machine. In: Forgetting Machines : Knowledge Management Evolution in Early Modern Europe. BRILL. ISBN 978-90-04-27846-2.
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CEVOLINI, Alberto (ed.), 2016. Forgetting machines: knowledge management evolution in early modern Europe. Leiden Boston: Brill. Library of the written word The handpress world, volume 53 volume 40. ISBN 978-90-04-32525-8.