BibTex format
@article{McCall:2016:4/044017,
author = {McCall, MW and Kinsler, P and Topf, RDM},
doi = {4/044017},
journal = {Journal of Optics},
title = {The refractive index of reciprocal electromagnetic media},
url = {http://dx.doi.org/10.1088/2040-8978/18/4/044017},
volume = {18},
year = {2016}
}