N. Otto, T. Marenda, J. Metzger, and U. Menzel. Proceedings of the 11th IWA Micropol & Ecohazard Conference 2019, page 718-719. International Water Association, (November 2019)
N. Otto, S. Platz, T. Fink, M. Wutscherk, and U. Menzel. Water science and technology : a journal of the International Association on Water Pollution Research, 73 (11):
2739--2746(2016)