Nuclei with Tetrahedral Symmetry
  We discuss a point-group-theory based method of searching for new regions of nuclear stability. We illustrate the related strategy with realistic calculations employing the tetrahedral and the octahedral point groups. In particular, several nuclei in the Rare Earth region appear as excellent candidates to study the new mechanism. 
J. Dudek, J. Dobaczewski, N. Dubray, A. Gozdz, V. Pangon, N. Schunck