@misc{fritsch_how_to_2010, 
author={Fritsch, D.},
title={How to make technically useful polymer membranes?},
year={2010},
howpublished = {conference lecture (invited): Mexico (MEX); 20.10.2010},
note = {Online available at: \url{} (DOI). Fritsch, D.: How to make technically useful polymer membranes?. 1er Simposio de Ingenieria Quimica, Instituto Tecnologico de Toluca, Metepec. Mexico (MEX), 2010.}}