High-energy spatiotemporal solitons in GRIN fiberF. Mangini, M. Zitelli, M. Ferraro, D.S. Kharenko, A. Niang, A. Tonello, V. Couderc and S. WabnitzEPJ Web Conf., 243 (2020) 20001DOI: https://doi.org/10.1051/epjconf/202024320001