Rytz, 1979, Atomic Data and Nuclear Data Tables, 23, 507, 10.1016/0092-640X(79)90028-7
Grennberg, 1971, Metrologia, 7, 65, 10.1088/0026-1394/7/2/005
Cohen, 1987, Rev. Mod. Phys., 59, 1121, 10.1103/RevModPhys.59.1121
Cohen, 1983, Nucl. Instrum. Methods, 211, 153, 10.1016/0167-5087(83)90564-1
1969, Vols. 3–56
Westmeier, 1985