Milsted, J.; Friedman, A. M.; Stevens, C. M. (1965). "The alpha half-life of berkelium-247; a new long-lived isomer of berkelium-248". Nuclear Physics. 71 (2): 299. Bibcode:1965NucPh..71..299M. doi:10.1016/0029-5582(65)90719-4. "The isotopic analyses disclosed a species of mass 248 in constant abundance in three samples analysed over a period of about 10 months. This was ascribed to an isomer of Bk248 with a half-life greater than 9 [years]. No growth of Cf248 was detected, and a lower limit for the β− half-life can be set at about 104 [years]. No alpha activity attributable to the new isomer has been detected; the alpha half-life is probably greater than 300 [years]."
Bohre, Ashish (2017). "Vitreous and Crystalline Phosphate High Level Waste Matrices: Present Status and Future Challenges". Journal of Industrial and Engineering Chemistry. 50: 1–14. doi:10.1016/j.jiec.2017.01.032.
Milsted, J.; Friedman, A. M.; Stevens, C. M. (1965). "The alpha half-life of berkelium-247; a new long-lived isomer of berkelium-248". Nuclear Physics. 71 (2): 299. Bibcode:1965NucPh..71..299M. doi:10.1016/0029-5582(65)90719-4. "The isotopic analyses disclosed a species of mass 248 in constant abundance in three samples analysed over a period of about 10 months. This was ascribed to an isomer of Bk248 with a half-life greater than 9 [years]. No growth of Cf248 was detected, and a lower limit for the β− half-life can be set at about 104 [years]. No alpha activity attributable to the new isomer has been detected; the alpha half-life is probably greater than 300 [years]."
Peterson, Per; Kastenberg, William; Corradini, Michael. "Nuclear Waste and the Distant Future". Issues in Science and Technology (Summer 2006). Washington, D.C.: National Academy of Sciences. Archived from the original on 2010-07-10.
Gabbard, Alex (1993). "Coal Combustion". ORNL Review. 26 (3–4). Oak Ridge, Tennessee: Oak Ridge National Laboratory. Archived from the original on February 5, 2007.
Morrey, E. V.; Elliott, M. L.; Tingey, J. M. (February 1993), Laboratory-scale vitrification and leaching of Hanford high-level waste for the purpose of simulant and glass property models validation, OSTI6510132.
Gabbard, Alex (1993). "Coal Combustion". ORNL Review. 26 (3–4). Oak Ridge, Tennessee: Oak Ridge National Laboratory. Archived from the original on February 5, 2007.
Peterson, Per; Kastenberg, William; Corradini, Michael. "Nuclear Waste and the Distant Future". Issues in Science and Technology (Summer 2006). Washington, D.C.: National Academy of Sciences. Archived from the original on 2010-07-10.
