BibTex format
@article{Pritchard:2006:10.1111/j.1365-2966.2006.10028.x,
author = {Pritchard, JR and Furlanetto, SR},
doi = {10.1111/j.1365-2966.2006.10028.x},
journal = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
pages = {1057--1066},
title = {Descending from on high: Lyman-series cascades and spin-kinetic temperature coupling in the 21-cm line},
url = {http://dx.doi.org/10.1111/j.1365-2966.2006.10028.x},
volume = {367},
year = {2006}
}