@misc{levkov_a_numerical_1996, 
author={Levkov, L., Boin, M., Kornblueh, L., Raschke, E.},
title={A Numerical Simulation of a Contrail},
year={1996},
howpublished = {conference lecture: Helsinki (FIN);},
note = {Levkov, L.; Boin, M.; Kornblueh, L.; Raschke, E.: A Numerical Simulation of a Contrail. In: Proceedings of the 14th International Conference on Nucleation and Atmospheric Aerosols. Helsinki (FIN). 1996. 345-348.}}