%0 Journal Article %T Ultrafast XUV emission from laser wakefields in underdense plasma %A Liu, Yue %A Sheng, Z M %A Zheng, J %A Li, F Y %A Xu, X L %A Lu, W %A Mori, W B %A Liu, C S %A Zhang, J %J New Journal of Physics %V 14 %N 8 %P 12 %D 2012-08-01 %~ DeepDyve