[n] M. Kuhlmann, E. Schneidmiller, and M. V. Yurkov, “Frequency Doubling Mode of Operation of Free Electron Laser FLASH2”, in Proc. FEL'17, Santa Fe, NM, USA, Aug. 2017, pp. 117-120. doi:10.18429/JACoW-FEL2017-MOP036
Use Complete Form