Prior Results and Motivation for the Survey

In 2006, we again revisited Ce with the RCI methodology [41]. This time we were able to include some limited core-valence correlation involving the 5s and 5p subshells and the careful use of a high J excited neutral threshold to define the relative positions of 

In the long run, the most important products of this Nd study were the tools that were developed to help deal with basis set construction and jls restrictions placed on the 4f electron subgroup. We had reached that limit where necessity had forced us to invent a new approach in order to move further into the row. Having gone through the pains of developing 

---