Citation

Batts BD Spinner E (1969) Vibration-spectral and structural comparison of the 4-aminopyridine cation with the 4-hydroxypyridinium ion and 4-pyridone. The protio parent ions, N- and C-deuterated, and N-methylated ions. Relevant N.M.R. spectral studies. Australian Journal of Chemistry 22, 2595-2610.

https://doi.org/10.1071/CH9692595