TY - RPRT TI - Evidence for electron-electron interaction in projectile K-shell ionization. AU - H Hülskötter AU - WE Meyerhof AU - E Dillard AU - N Guardala PY - 1989 DO - 10.1103/physrevlett.63.1938 UR - https://pubmed.ncbi.nlm.nih.gov/10040719/ ID - 10040719 ER -