Monte Carlo analysis of ionization effects on spatiotemporal electron swarm developmentSaša Dujko, Zoran M. Raspopović, Ronald D. White, Toshiaki Makabe and Zoran Lj. PetrovićEur. Phys. J. D, 68 6 (2014) 166DOI: https://doi.org/10.1140/epjd/e2014-50088-4