TY - RPRT TI - Paths to optimization in the multistate Rayleigh-Ritz variational method: Applications to the double-well quantum anharmonic oscillator. AU - RF Bishop AU - MF Flynn AU - MC Boscá AU - R Guardiola PY - 1989 DO - 10.1103/physreva.40.6154 UR - https://pubmed.ncbi.nlm.nih.gov/9902002/ ID - 9902002 ER -