@misc{ponce_organicinorganic_hybrid_2004, 
author={Ponce, M.L.},
title={Organic-Inorganic hybrid membranes with heteropolyacids for DMFC applications (Dissertation)},
year={2004},
howpublished = {doctoral thesis: Universitaet Hamburg, FB Chemie},
note = {Ponce, M.: Organic-Inorganic hybrid membranes with heteropolyacids for DMFC applications (Dissertation). Universitaet Hamburg, FB Chemie, 2004.}}