@inbook{Backus_1985,
title={PHOTOVOLTAICS STATE-OF-THE-ART},
url={http://dx.doi.org/10.1016/b978-0-08-031644-4.50021-7},
DOI={10.1016/b978-0-08-031644-4.50021-7},
booktitle={Passive and Low Energy Ecotechniques},
publisher={Elsevier},
author={Backus,
Charles E.},
year={1985},
pages={275–289} }