TY - RPRT TI - Zero-point vibrational effects on proton shieldings: functional-group contributions from ab initio calculations. AU - K Ruud AU - P O Astrand AU - P R Taylor PY - 2001 DO - 10.1021/ja004160m UR - https://pubmed.ncbi.nlm.nih.gov/11457293/ ID - 11457293 ER -