TY - RPRT TI - Spin-free formulation of the multireference driven similarity renormalization group: A benchmark study of first-row diatomic molecules and spin-crossover energetics AU - Li, Chenyang AU - Evangelista, Francesco A. PY - 2021 DO - 10.1063/5.0059362 UR - https://www.osti.gov/biblio/1852064 ID - 1852064 ER -