TY  - RPRT
TI  - Extended norm-conserving pseudopotentials.
AU  - EL Shirley
AU  - DC Allan
AU  - RM Martin
AU  - JD Joannopoulos
PY  - 1989
DO  - 10.1103/physrevb.40.3652
UR  - https://pubmed.ncbi.nlm.nih.gov/9992335/
ID  - 9992335
ER  -