Pure Appl. Chem., 1980, Vol. 52, No. 6, pp. 1471-1494
http://dx.doi.org/10.1351/pac198052061471
The aromaticity of ions and radicals
First page:

Pure Appl. Chem., 1980, Vol. 52, No. 6, pp. 1471-1494
http://dx.doi.org/10.1351/pac198052061471