BibTex format
@article{Crick:2008:10.1364/OE.16.002351,
author = {Crick, DR and Ohadi, H and Bhatti, I and Thompson, RC and Segal, DM},
doi = {10.1364/OE.16.002351},
journal = {OPTICS EXPRESS},
pages = {2351--2362},
title = {Two-ion Coulomb crystals of Ca<SUP>+</SUP> in a Penning trap},
url = {http://dx.doi.org/10.1364/OE.16.002351},
volume = {16},
year = {2008}
}