@misc{ruffmann_organicinorganic_composite_2002, 
author={Ruffmann, B.,Pereira Nunes, S.},
title={Organic/inorganic composite membranes for application in DMFC},
year={2002},
howpublished = {conference lecture: Guildford (GB); 27.-30.08.2002},
note = {Online available at: \url{} (DOI). Ruffmann, B.; Pereira Nunes, S.: Organic/inorganic composite membranes for application in DMFC. 11th International Conference on Solid State Protonic Conductors, SSPC-11. Guildford (GB), 2002.}}