BibTex format
@article{Hughes:2014:10.1103/PhysRevA.90.013810,
author = {Hughes, C and Genoni, MG and Tufarelli, T and Paris, MGA and Kim, MS},
doi = {10.1103/PhysRevA.90.013810},
journal = {PHYSICAL REVIEW A},
title = {Quantum non-Gaussianity witnesses in phase space},
url = {http://dx.doi.org/10.1103/PhysRevA.90.013810},
volume = {90},
year = {2014}
}