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Weller, H. R. (1990). The d-state of 4He and the 2H(d,γ) 4He reaction from Ed = 800 keV-to-50 MeV. Nuclear Physics A, 508, 273–279. doi:10.1016/0375-9474(90)90484-4 
10.1016/0375-9474(90)90484-4