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APA Citation
Shayan, M., Davoudifar, P., & Bagheri, Z. (2017). the study of variations of low energy cosmic helium's flux (up to 6 MeV) due to solar activity. Advances in space research, 59(8), 2186–2191. http://access.bl.uk/ark:/81055/vdc_100045163303.0x000056