Ion swarm data of N4+ in N2, O2 and dry air for streamer dynamics simulationA. Bekstein, M. Benhenni, M. Yousfi, O. Ducasse and O. EichwaldEur. Phys. J. Appl. Phys., 42 1 (2008) 33-40DOI: https://doi.org/10.1051/epjap:2008037