1. Titelbild: „A German Formula" – Rezepte für Geheimtinten aus den Archiven der CIA (CHEMKON 4/2013). Issue 4 (14th October 2013) Authors: Krahl, Emanuel; Ducci, Matthias Journal: Chemkon Issue: Volume 20:Issue 4(2013:Oct.) Page Start: 157 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. „A German Formula" – Rezepte für Geheimtinten aus den Archiven der CIA. Issue 4 (2nd October 2013) Authors: Krahl, Emanuel; Ducci, Matthias Journal: Chemkon Issue: Volume 20:Issue 4(2013:Oct.) Page Start: 163 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗