Klein, Ursula Department Structural Changes in Systems of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
http://edition-open-access.de/proceedings/11/13/index.html (全文テキスト（全般）)
Proceedings11Chap13.pdf (全文テキスト（全般）), 3MB
Klein, U. (2019). Paper Tools. In J., Renn, & M., Schemmel (Eds.), Culture and Cognition: Essays in Honor of Peter Damerow (pp. 155-159). Berlin: Edition Open Access. doi:10.34663/9783945561355-13.
