Paper

PARMA/EXPACS version 4.0
T. Sato, Analytical Model for Estimating the Zenith Angle Dependence of Terrestrial Cosmic Ray Fluxes, PLOS ONE, 11(8): e0160390 (download)

PARMA/EXPACS version 3.0
T. Sato, Analytical Model for Estimating Terrestrial Cosmic Ray Fluxes Nearly Anytime and Anywhere in the World: Extension of PARMA/EXPACS, PLOS ONE, 10(12): e0144679 (download)

T. Sato, H. Yasuda, K. Niita, A. Endo and L. Sihver, "Development of PARMA: PHITS based Analytical Radiation Model in the Atmosphere", Radiat. Res. 170, 244-259 (2008) (Open-access PDF)

 T. Sato and K. Niita, "Analytical functions to predict cosmic-ray neutron spectra in the atmosphere" Radiat. Res. 166, 544-555 (2006) (Open-access PDF)

International Conference

T. Sato, H. Yasuda, K. Niita, A. Endo and Lembit Sihver, "A Novel Analytical Approach for Estimating Terrestrial Cosmic-Ray Dose for Anywhere in the World", 13th International Congress of Radiation Research, San Francisco, USA, July (2007).

Tatsuhiko Sato, Hiroshi Yasuda, Masashi Takada, Takashi Nakamura, Daiki Satoh, Akira Endo, Koji Niita and Lembit Sihver, "PARMA: PHITS-based Analytical Radiation Model in the Atmosphere - Verification of Its Accuracy in Estimating Cosmic Radiation Doses", 8th International Symposium on the Natural Radiation Environment, Buzios, Rio de Janeiro, Brazil, Oct. 7-12 (2007)

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