P.A. Zyla et al. (Particle Data Group), Prog. Theor. Exp. Phys.2020, 083C01 (2020),DOI:10.1093/ptep/ptaa104
[3]
③ https://www.radioactivity.eu.com/site/pages/Dose_Cosmic.htm
[4]
④ Discovery of a big void in Khufu's Pyramid by observation of cosmic-ray muons, Nature, doi:10.1038/nature24647
[5]
⑤ http://www.hip.institute/#press
[6]
⑥ Imaging the density profile of a volcano interior with cosmic-ray muon radiography combined with classical gravimetry, https://doi.org/10.1088/0957-0233/23/4/042001
