@article{AHL_2020__3__1161_0,
     author = {Hazard, Christophe and Paolantoni, Sandrine},
     title = {Spectral analysis of polygonal cavities containing a negative-index material},
     journal = {Annales Henri Lebesgue},
     pages = {1161--1193},
     publisher = {\'ENS Rennes},
     volume = {3},
     year = {2020},
     doi = {10.5802/ahl.58},
     language = {en},
     url = {https://ahl.centre-mersenne.org/articles/10.5802/ahl.58/}
}