@article{NANO_2014_5_5_a1,
     author = {K. V. Pravdin and I. Yu. Popov},
     title = {Photonic crystal with negative index material layers},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {626--643},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2014_5_5_a1/}
}