A theoretical interpretation is given for the configurations of the type 4<i>fnl</i> of Ce III. New values for radial parameters are obtained by least-squares. Percentage compositions in the appropriate coupling schemes are given for the energy levels. The rms error is less than 0.7% for most cases.
NISSAN SPECTOR, "4fnl Configurations of Doubly Ionized Cerium (Ce III)," J. Opt. Soc. Am. 55, 492-501 (1965)