@misc{schwalbe_validation_of_1991, 
author={Schwalbe, K.-H.},
title={Validation of EGF P1-90 by an European round robin},
year={1991},
howpublished = {conference lecture: Indianapolis, IN (USA);},
note = {Schwalbe, K.: Validation of EGF P1-90 by an European round robin. ASTM Meeting Committee E24. Indianapolis, IN (USA), 1991.}}