@misc{bormann_einfuehrung_in_1990, 
author={Bormann, R.},
title={Einfuehrung in die CALPHAD – Methode: Oberseminar},
year={1990},
howpublished = {lecture: Universitaet Goettingen; WS 1989-1990},
note = {Online available at: \url{} (DOI). Bormann, R.: Einfuehrung in die CALPHAD – Methode: Oberseminar. Universitaet Goettingen, 1990.}}