Self-compression of relativistically strong femtosecond laser pulses during the excitation of a plasma wake waveA. A. Balakin, A. G. Litvak, V. A. Mironov and S. A. SkobelevEPL, 100 3 (2012) 34002DOI: https://doi.org/10.1209/0295-5075/100/34002