Viefhaus, J. and Avaldi, L., Snell, G., Wieddenhöft, M., Hentges, R., Rüdel, A., Schäfers, F., Menke, D., Heinzmann, U., Engelns, A., Berakdar, J., Klar, H., Becker, U.
Circular dichroism in double photoionization of helium studied by electron time-of-flight coincidence spectroscopy
Coincidence Studies of Electron and Photon Impact Ionizationpp 145-153 (Eds.) Whelan, C. T. and Walters, H. R. J.,Plenum Publishing Corporation, New York, (1997)