TY  - RPRT
TI  - Reduced scaling formulation of CASPT2 analytical gradients using the supporting subspace method
AU  - Song, Chenchen
AU  - Neaton, Jeffrey B.
AU  - Martínez, Todd J.
PY  - 2021
DO  - 10.1063/5.0035233
UR  - https://www.osti.gov/biblio/1767927
ID  - 1767927
ER  -