Diercksen, Geerd H. F. Molecular Physics, Stellar Astrophysics, MPI for Astrophysics, Max Planck Society;
Sako, T., Paldus, J., & Diercksen, G. H. F. (2014). Angular correlation in He and He-like atomic ions: a manifestation of the genuine and conjugate Fermi holes. Physical Review A, 89(6): 062501. doi:10.1103/PhysRevA.89.062501.