|Up a level|
Richter, Klaus and Rost, J. and Thürwächter, R. and Briggs, J. and Wintgen, Dieter and Solov'ev, E. (1991) New State of Binding of Antiprotons in Atoms. Physical Review Letters (PRL) 66 (2), pp. 149-152.
Rost, J. and Gersbacher, R. and Richter, Klaus and Briggs, J. and Wintgen, Dieter (1991) The nodal structure of doubly-excited resonant states of helium. Journal of Physics B 24, pp. 2455-2466.