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IEEE Photonics Technology Letters > 2007 > 19 > 22 > 1789 - 1791
IEEE Photonics Technology Letters > 2011 > 23 > 5 > 275 - 277
IEEE Photonics Technology Letters > 2007 > 19 > 22 > 1789 - 1791
IEEE Photonics Technology Letters > 2011 > 23 > 5 > 275 - 277