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IEEE Photonics Technology Letters > 2012 > 24 > 7 > 584 - 586
IEEE Photonics Technology Letters > 2009 > 21 > 13 > 878 - 880
IEEE Photonics Technology Letters > 2012 > 24 > 7 > 584 - 586
IEEE Photonics Technology Letters > 2009 > 21 > 13 > 878 - 880