BibTex format
@unpublished{Makwana:2019:10.1364/OE.27.016088,
author = {Makwana, M and Craster, R and Guenneau, S},
doi = {10.1364/OE.27.016088},
publisher = {OPTICAL SOC AMER},
title = {Topological beam-splitting in photonic crystals},
url = {http://dx.doi.org/10.1364/OE.27.016088},
year = {2019}
}