Schematic Interactions with Many Degeneracies
  In previous works we examined the spectra for systems of 2 protons and 2 neutrons, in a single j shell calculation, by obtaining matrix elements from experiment. More recently we considered schematic interactions in the same model space. We continue in this vein here. The present work and the former can be regarded as 2 bookends on a bookshelf. 
Arun Kingan, Michael Quinonez and Larry Zamick
nucl-th