@misc{schwalbe_rcurve_characterization_1990, 
author={Schwalbe, K.-H.,Reese, E.,Friedrich, K.},
title={R-curve characterization of polymer materials},
year={1990},
howpublished = {conference lecture: San Francisco, CA (USA); 23.-27.04.1990},
note = {Online available at: \url{} (DOI). Schwalbe, K.; Reese, E.; Friedrich, K.: R-curve characterization of polymer materials. ASTM Committee Week. San Francisco, CA (USA), 1990.}}