1. https://www.euchems.eu/policy-and-communication/publications/100-distinguished-european-chemists-2
/ . EuChemS initiated, as a Millennium Project starting 1998, the celebration of Distinguished European Chemists spanning a period of over two hundred years. Download on Dec 30. 2018.
2. Gros L, Köhler B (Redaktion). Gesellschaft Deutscher Chemiker (Hrsg.), Carl Remigius Fresenius und das Chemische Laboratorium Fresenius. Wiesbaden 18. Juli 2013. Frankfurt am Main 2013. ISBN 978–3–936028-78-2.
3. See
https://pubs.acs.org/page/acscii/about.html
. The term “central science” was also used by the Royal Society of Chemistry (RSC)
https://pubs.acs.org/page/acscii/about.html
- download on Dec 3 2018.
4. Fresenius CR. Anleitung zur Quantitativen Chemischen Analyse. Vorwort zur 6. Auflage 1875, S. V.
5. Fresenius CR. Anleitung zur Qualitativen Chemischen Analyse, 7Auflage 1852, S. 4.