IEEE Photonics Technology Letters
IEEE Photonics Technology Letters > 2009 > 21 > 20 > 1487 - 1489
IEEE Photonics Technology Letters > 2009 > 21 > 20 > 1523 - 1525
IEEE Photonics Technology Letters > 2009 > 21 > 20 > 1487 - 1489
IEEE Photonics Technology Letters > 2009 > 21 > 20 > 1523 - 1525