Trapping of antiprotons in metastable antiprotonic helium atoms: Progress and prospects

Cascade of metastable antiprotonic helium atoms

Metastable States in Antiprotonic Helium Atoms: An Island of Stability in a Sea of Continuum

Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules

Metastable antiprotonic helium atomcules

Laser-Induced Resonant Annihiliation in Metastable Antiprotonic Helium Atoms. II.

First observation of laser-induced resonant annihilation in metastable antiprotonic helium atoms