Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tom Kirchner and A. Igarashi and László Gulyás,Double ionization of helium by fast ion impact: Reexamination of the correlation function,Physical Review A,1050-2947,American Physical Society (APS),2006-09-29,74,,,https://cir.nii.ac.jp/crid/1871428067757366912,https://doi.org/10.1103/physreva.74.032713