BibTex format
@article{Gibbon:2010:17/172001,
author = {Gibbon, JD and Holm, DD},
doi = {17/172001},
journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL},
title = {The dynamics of the gradient of potential vorticity},
url = {http://dx.doi.org/10.1088/1751-8113/43/17/172001},
volume = {43},
year = {2010}
}