@misc{schwalbe_the_engineering_2000, 
author={Schwalbe, K.-H.,Zerbst, U.},
title={The Engineering Treatment Model},
year={2000},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Schwalbe, K.; Zerbst, U.: The Engineering Treatment Model. International Journal of Pressure Vessels and Piping. 2000. vol. 77, 905-918.}}