1. E. Klempt, Atomic physics with antiprotons, in Proc. 8th Eur. Symp. on Proton-antiproton interaction, Thessaloniki, to be published
2. Proc. First Workshop on Antimatter physics at low energy;Poth,1986
3. Proc. Int. Symposium on Medium-energy nucleon and anti-nucleon scattering;Poth,1985
4. First observation of K X-rays from p atoms
5. X-ray spectra of the pp atom in coincidence with annihilation into neutral and charged channels;Ahmad,1986