Total and Single Differential Cross Sections for the Electron Impact Ionization of the Ground State of Helium Th. Subodh Chandra Singh, Keka Basu Choudhury, M. Babuyaima Singh, N.C. Deb, S.C. Mukherjee et P.S. Mazumdar J. Phys. II France, 7 4 (1997) 519-522 DOI: 10.1051/jp2:1997143