Hori, M. (2016). "Buffer-gas cooling of antiprotonic helium to 1.5 to 1.7 K, and antiproton-to-electron mass ratio". Science354 (6312): 610–4. doi:10.1126/science.aaf6702. PMID27811273.
Hori, M. (2016). "Buffer-gas cooling of antiprotonic helium to 1.5 to 1.7 K, and antiproton-to-electron mass ratio". Science354 (6312): 610–4. doi:10.1126/science.aaf6702. PMID27811273.