1. Antiproton Decelerator. Available from:
2. ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) Collaboration. Available from:
3. ATHENA (ApparaTus for High-precision Experiments on Neutral Antimatter) Collaboration. Available from:
4. ATRAP (Antimatter TRAP) Collaboration. Available from:
5. Antihydrogen physics