Anharmonic frequencies of ［F, C, N, X］ isomers (X = O, S) obtained from explicitly correlated coupled-cluster calculations. Chem. Phys., (387)1-3:1–4, August 2011. [PUMA: configuration theoretische stuttgart calculations,FNCO coupled-cluster chemie isomers,Vibrational from:alexanderdenzel frequencies,Explicitly rauhut calculations Anharmonic interaction theochem] URL