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Peiris, F. C.; Lee, S.; Bindley, U.; Furdyna, J. K. . (1999). ZnMgSe/ZnCdSe and ZnMgSe/ZnSeTe distributed Bragg reflectors grown by molecular beam epitaxy. Journal of Applied Physics, 86(2), 719–. doi:10.1063/1.370794 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research