BibTex format
@article{Kulishov:2015:10.1364/OE.23.009347,
author = {Kulishov, M and Jones, HF and Kress, B},
doi = {10.1364/OE.23.009347},
journal = {OPTICS EXPRESS},
pages = {9347--9362},
title = {Analysis of <i>PT</i>-symmetric volume gratings beyond the paraxial approximation},
url = {http://dx.doi.org/10.1364/OE.23.009347},
volume = {23},
year = {2015}
}