@misc{heinicke_determination_of_1991, 
author={Heinicke, F., Brokmeier, H.-G., Pannetier, J.},
title={Determination of plagioclase textures with optimized 20 resolution},
year={1991},
howpublished = {report},
note = {Heinicke, F.; Brokmeier, H.; Pannetier, J.: Determination of plagioclase textures with optimized 20 resolution. 1991.}}