@article{HeusingSunOtero-AnayaAegerter_2006,
title={Grey, brown and blue coloring sol-gel electrochromic devices},
author={Heusing, Sabine and Sun, Donglan L. and Otero-Anaya, J. and Aegerter, Michel A.},
doi={http://dx.doi.org/10.22028/D291-24200},
year={2006}
}