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Zharov, Alexander A.; Zharova, Nina A.; Noskov, Roman E.; Shadrivov, Ilya V.; Kivshar, Yuri S. «Birefringent left-handed metamaterials and perfect lenses for vectorial fields». New Journal of Physics, 7, 1, 2005, pàg. 220. arXiv: physics/0412128. Bibcode: 2005NJPh....7..220Z. DOI: 10.1088/1367-2630/7/1/220.
Slyusar, V.I. (October 6–9, 2009). "Metamaterials on antenna solutions" a 7th International Conference on Antenna Theory and Techniques ICATT’09. : 19–24