@misc{pereiranunes_membranes_for_2007, 
author={Pereira Nunes, S.},
title={Membranes for energy},
year={2007},
howpublished = {conference lecture: Siofok (H);},
note = {Pereira Nunes, S.: Membranes for energy. PERMEA 2007. Siofok (H), 2007.}}