@misc{macke_scattering_of_1993, 
author={Macke, A.},
title={Scattering of light by polyhedral ice crystals},
year={1993},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Macke, A.: Scattering of light by polyhedral ice crystals. Applied Optics. 1993. vol. 32, 2780-2788.}}