@ARTICLE {9335,
author={M. G. Silveirinha},
doi={10.1088/1367-2630/16/8/083042},
journal={New Journal of Physics},
title={Boundary Conditions for Quadrupolar Metamaterials},
year={2014},
month={August},
volume={16},
number={083042},
pages={1-30},
ISSN={1367-2630}
}