Doubly differential cross sections for electron-impact ionization of propane in the energy range from 30 eV to 1 keVWoon Yong Baek, Marion Ute Bug, Heidi Nettelbeck and Hans RabusEur. Phys. J. D, 73 3 (2019) 61DOI: https://doi.org/10.1140/epjd/e2019-90664-4