IEEE Photonics Technology Letters
IEEE Photonics Technology Letters > 2007 > 19 > 8 > 553 - 555
IEEE Photonics Technology Letters > 2009 > 21 > 9 > 557 - 559
IEEE Photonics Technology Letters > 2007 > 19 > 8 > 553 - 555
IEEE Photonics Technology Letters > 2009 > 21 > 9 > 557 - 559