TY - RPRT TI - Atomic many-body perturbation method based on multiconfiguration Dirac-Fock wave functions. AU - ZW Liu AU - HP Kelly PY - 1991 DO - 10.1103/physreva.43.3305 UR - https://pubmed.ncbi.nlm.nih.gov/9905413/ ID - 9905413 ER -