BibTex format
@article{Azeem:2021:10.1364/OL.420791,
author = {Azeem, F and Trainor, LS and Devane, PA and Norman, DS and Rueda, A and Lambert, NJ and Kumari, M and Foreman, MR and Schwefel, HGL},
doi = {10.1364/OL.420791},
journal = {Optics Letters},
pages = {2477--2480},
title = {Dielectric perturbations: anomalous resonance frequency shifts in optical resonators},
url = {http://dx.doi.org/10.1364/OL.420791},
volume = {46},
year = {2021}
}