The article is in German and about QBD factors in pharmaceutical excipients with example on pellets. If somebody is interested I can check for a translation. The author Gudrun Ding from IPC
Dresden will also be present at Powtech Nürnberg Hall 6 booth 111 and at CPhI Paris Hall 1 C39 to directly exchange on the topic.
http://www.pharma-food.de/texte/anzeigen/8328/Anlagendesign/Planung/Pharmazeutische-Hilfsstoffe-Quality-by-design/pharmazeutische-Hilfsstoffe-Pharmaexcipients-IPC+IPC-Process-Center-GmbH-Co-KG