%0 Journal Article %T High power coupled midinfrared free-electron-laser oscillator scheme as a driver for up-frequency conversion processes in the x-ray region %A Tecimer, M %J Physical Review Special Topics - Accelerators and Beams %V 15 %N 2 %@ 1098-4402 %D 2012-02-01 %I The American Physical Society %~ DeepDyve