DNB online, 7.12.2018 https://portal.dnb.de/opac.htm?method=showFullRecord&currentResultId=developments+and+in+and+strategic+and+ceramic+and+materials%26any&currentPosition=3

Developments in strategic ceramic materials / editors Waltraud M. Kriven [et al.]. - Hoboken, copyright © 2016. Red. (Institute of Organic Chemistry, University of Cologne, Germany)

ResearchGate, 7.12.2018 https://www.researchgate.net/profile/Thomas_Fischer11

University of Cologne, 7.12.2018 https://www.chemie.uni-koeln.de/fischerthomas.html