H. Knudsen, Kristiansen, H. - P. E., Thomsen, H. D., Uggerhøj, U. I., Ichioka, T., Møller, S. P., Hunniford, C. A., McCullough, R. W., Charlton, M., Kuroda, N., Nagata, Y., Torii, H. A., Yamazaki, Y., Imao, H., Andersen, H. H., and Tökesi, K.,
“On the double ionization of helium by very slow antiproton impact”,
Proceedings of the Fourth International Conference on Elementary Processes in Atomic Systems, vol. 267, pp. 244 - 247, 2009.