Citation: W. Adam et al., THE D-PARAMETER (EPR ZERO-FIELD SPLITTING) OF LOCALIZED 1,3-CYCLOPENTANEDIYL TRIPLET DIRADICALS AS A MEASURE OF ELECTRONIC SUBSTITUENT EFFECTS ON THE SPIN-DENSITIES IN PARASUBSTITUTED BENZYL-TYPE RADICALS, Journal of organic chemistry, 61(20), 1996, pp. 7056-7065