Weak e+e- lines from internal pair conversion observed in collisions of 238U with heavy nuclei S. Heinz, E. Berdermann, F. Heine, O. Joeres, P. Kienle, I. Koenig, W. Koenig, C. Kozhuharov, U. Leinberger, M. Rhein et al. (2 more) Published online: 15 January 1998
