@misc{malchow_a_simple_1993, 
author={Malchow, H., Poeschel, T.},
title={A simple model for the growth of ramificated leaf structures},
year={1993},
howpublished = {report},
note = {Malchow, H.; Poeschel, T.: A simple model for the growth of ramificated leaf structures. 1993.}}