IEEE Photonics Technology Letters
IEEE Photonics Technology Letters > 2007 > 19 > 19 > 1505 - 1507
IEEE Photonics Technology Letters > 2008 > 20 > 10 > 773 - 775
IEEE Photonics Technology Letters > 2009 > 21 > 9 > 557 - 559
IEEE Photonics Technology Letters > 2009 > 21 > 9 > 566 - 568