BibTex format
@article{Czaja:2009:10.1175/2009JPO4024.1,
author = {Czaja, A and Hausmann, U},
doi = {10.1175/2009JPO4024.1},
journal = {JOURNAL OF PHYSICAL OCEANOGRAPHY},
pages = {2280--2294},
title = {Observations of Entry and Exit of Potential Vorticity at the Sea Surface},
url = {http://dx.doi.org/10.1175/2009JPO4024.1},
volume = {39},
year = {2009}
}