@article{Auffhammer2012,
author = {Auffhammer, M. and Vincent, J.R.},
title= {Unobserved time effects confound the identification of climate change impacts},
year = {2012},
doi = {10.1073/pnas.1202049109},
volume = {109},
number = {30},
pages = {11973--11974},
}