BibTex format
@article{Retzker:2008:10.1103/PhysRevLett.101.260504,
author = {Retzker, A and Thompson, RC and Segal, DM and Plenio, MB},
doi = {10.1103/PhysRevLett.101.260504},
journal = {PHYSICAL REVIEW LETTERS},
title = {Double Well Potentials and Quantum Phase Transitions in Ion Traps},
url = {http://dx.doi.org/10.1103/PhysRevLett.101.260504},
volume = {101},
year = {2008}
}