Phase space dynamics after the breaking of a relativistic Langmuir wave in a thermal plasmaAnna Grassi, Luca Fedeli, Andrea Macchi, Sergei V. Bulanov and Francesco PegoraroEur. Phys. J. D, 68 6 (2014) 178DOI: https://doi.org/10.1140/epjd/e2014-50153-0