@article{articleec43875f,
title   = {Electromagnetic energy stored in inhomogeneous scattering systems},
author = {Arruda, Tiago J. and Pinheiro, Felipe A. and Martinez, Alexandre Souto},
year = {2017},
doi = {10.1364/josaa.34.001934},
journal   = {Journal of the Optical Society of America A}
}