Griswold, J. R.; Medvedev, D. G.; Engle, J. W.; et al. (2016). "Large scale accelerator production of 225Ac: Effective cross sections for 78-192 MeV protons incident on 232Th targets". Applied Radiation and Isotopes. 118: 366–374. doi:10.1016/j.apradiso.2016.09.026. PMID27776333.
Griswold, J. R.; Medvedev, D. G.; Engle, J. W.; et al. (2016). "Large scale accelerator production of 225Ac: Effective cross sections for 78-192 MeV protons incident on 232Th targets". Applied Radiation and Isotopes. 118: 366–374. doi:10.1016/j.apradiso.2016.09.026. PMID27776333.