Low-Energy Peak Structure in Strong-Field Ionization by Mid-Infrared Laser PulsesC. Lemell, K. I. Dimitriou, D. G. Arbó, X.-M. Tong, D. Kartashov, J. Burgdörfer and S. GräfeEPJ Web of Conferences, 41 (2013) 02016DOI: https://doi.org/10.1051/epjconf/20134102016