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S.K. Saraf; C.E. Brient; P.M. Egun; S.M. Grimes; V. Mishra; R.S. Pedroni. (1988). Determination of the light response of BC-404 plastic scintillator for protons and deuterons with energies between 1 and 11 MeV. , 268(1), 200–203. doi:10.1016/0168-9002(88)90606-7 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research