Complex scattering potential – ionization contribution (CSP-ic) method for calculating total ionization cross sections on electron impactM. Vinodkumar, K. Korot and P. C. VinodkumarEur. Phys. J. D, 59 3 (2010) 379-387DOI: https://doi.org/10.1140/epjd/e2010-00140-6