Azadifar, MohammadRachidi, FarhadRubinstein, MarcosPaolone, MarioRakov, Vladimir A.Pavanello, DavideMetz, StefanRomero, Carlos2015-10-152015-10-152015-10-15201510.1109/SIPDA.2015.7339279https://infoscience.epfl.ch/handle/20.500.14299/119827Characteristics of Electric Fields of Upward Negative Stepped Leaderstext::conference output::conference proceedings::conference paper