Breakthroughs in Photonics 2012: Breakthroughs in Filamentation Milchberg, H. M. ; Palastro, J. P. ; Wahlstrand, J. K. Abstract Publication: IEEE Photonics Journal Pub Date: April 2013 DOI: 10.1109/JPHOT.2013.2253764 Bibcode: 2013IPhoJ...500405M