TY  - RPRT
TI  - 4f resonances with norm-conserving pseudopotentials.
AU  - DM Bylander
AU  - L Kleinman
PY  - 1990
DO  - 10.1103/physrevb.41.907
UR  - https://pubmed.ncbi.nlm.nih.gov/9993784/
ID  - 9993784
ER  -