@misc{hofmann_free_volume_2002, 
author={Hofmann, D.,Heuchel, M.,Lerbret, A.,Yampolskii, Y.},
title={Free volume distributions in conventional and ultra-high free volume polymers: molecular modeling and positron studies},
year={2002},
howpublished = {conference lecture: Berlin (D); 30.09.-02.10.2002},
note = {Online available at: \url{} (DOI). Hofmann, D.; Heuchel, M.; Lerbret, A.; Yampolskii, Y.: Free volume distributions in conventional and ultra-high free volume polymers: molecular modeling and positron studies. Polydays 2002, Berliner Polymerentage. Berlin (D), 2002.}}