TY  - RPRT
TI  - Nonorthogonal basis sets in quantum mechanics: Representations and second quantization.
AU  - E Artacho
AU  - Miláns del Bosch L
PY  - 1991
DO  - 10.1103/physreva.43.5770
UR  - https://pubmed.ncbi.nlm.nih.gov/9904902/
ID  - 9904902
ER  -