S. Li, A.R. Fry, S. Gilevich, Z. Huang, A. Marinelli, D.F. Ratner, and J. Robinson,
   "Laser Heater Transverse Shaping to Improve Microbunching Suppresion for X-ray FELs",
   in Proc. 37th International Free Electron Laser Conference, Daejeon, Republic of Korea, August 2015, paper WEP005, pp. 602-606,
    ISBN: 978-3-95450-134-2,
    doi:10.18429/JACoW-FEL2015-WEP005,
    http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/wep005.pdf, 2015.