Kleinpoppen H., and E. Kraiss, Physical Review Letters 20, 361-363 (1968).
H. Kleinpoppen
First name
H.
Last name
Kleinpoppen
Beyer H.-J., and H. Kleinpoppen, Zeitschrift Für Physik 206, 177-183 (1967).
Hils D., M.V. McCusker, H. Kleinpoppen, and S.J. Smith, Physical Review Letters 29, 398-401 (1972).
Kleinpoppen H., Physical Review A 3, 2015-2027 (1971).
Andersen N., I.V. Hertel, and H. Kleinpoppen, Journal Of Physics B: Atomic And Molecular Physics 17, L901 - L908 (1984).