@article{Allen_2016,
title={A detailed assessment of resource of biomethane from first,
second and third generation substrates},
volume={87},
ISSN={0960-1481},
url={http://dx.doi.org/10.1016/j.renene.2015.10.060},
DOI={10.1016/j.renene.2015.10.060},
journal={Renewable Energy},
publisher={Elsevier BV},
author={Allen,
Eoin and Wall,
David M. and Herrmann,
Christiane and Murphy,
Jerry D.},
year={2016},
month=mar,
pages={656–665} }