The covariance of the differences between experimental and theoretical chemical shifts as an aid for assigning two-dimensional heteronuclear correlation solid-state NMR spectra

- The computational procedure described for the assignment of HETCOR SSNMR spectra.
- The efficacy tested of the statistical treatment based on the covariance values.
- Compounds studied: o-acetylsalicylic acid; l-tyrosine; l-tyrosine hydrochloride.