@article{Azzem2021,
author = {Azeem, F. and Trainor,  L. S. and Devane, P. A. and Norman, D. S. and Rueda, A. and Lambert, N. J. and Kumari, M. and Foreman, M. R. and Schwefel, H. G. L.},
journal = {Opt. Lett.},
volume = {46},
pages = {2477--2480},
title = {Dielectric perturbations: anomalous resonance frequency shifts in optical resonators},
year = {2021},
doi = {10.1364/OL.420791},
}