Comment on "counterintuitive dispersion violating Kramers-Kronig relations in gain slabs"
Baranov, D G ; Zyablovsky, A A ; Dorofeenko, A V ; Vinogradov, A P ; Lisyansky, A A
Physical review letters, 2015-02, Vol.114 (8), p.089301-089301, Article 089301 [Periódico revisado por pares]United States
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