@misc{fischer_mechanical_twins_2003, 
author={Fischer, F.,Schaden, T.,Appel, F.,Clemens, H.},
title={Mechanical Twins, their development and growth},
year={2003},
howpublished = {journal article},
doi = {https://doi.org/10.1016/S0997-7538(03)00081-0},
note = {Online available at: \url{https://doi.org/10.1016/S0997-7538(03)00081-0} (DOI). Fischer, F.; Schaden, T.; Appel, F.; Clemens, H.: Mechanical Twins, their development and growth. European Journal of Mechanics  A. 2003. vol. 22, 709-726. DOI: 10.1016/S0997-7538(03)00081-0}}