Introduction ACP Theorem for Tn Examples Outlook References Density Crossing Points of Self-Normalized Sums and Normal via Edgeworth expansions Thorsten Dickhaus and Helmut Finner Institute of Biometrics & Epidemiology German Diabetes Center at the Heinrich-Heine-University Leibniz-Institute for Diabetes Research D¨ usseldorf, Germany GOCPS 2008, RWTH Aachen, 04.03.2008