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   "Influence of Environment Changes on Libera Sync 3 Long-term Stability",
   in Proc. 37th International Free Electron Laser Conference, Daejeon, Republic of Korea, August 2015, paper MOP043, pp. 126-128,
    ISBN: 978-3-95450-134-2,
    doi:10.18429/JACoW-FEL2015-MOP043,
    http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mop043.pdf, 2015.