Electron impact ionization of the gas-phase sorbitol Irina Chernyshova, Pavlo Markush, Anatoly Zavilopulo and Otto Shpenik Eur. Phys. J. D, 69 3 (2015) 80 Published online: 19 March 2015 DOI: 10.1140/epjd/e2015-50641-7