SEARCH Articles Figures Tables Arai, S., Hida, M„ Polycyclic Aromatic Nitrogen Arai, S., Hida, M„ Polycyclic Aromatic Nitrogen Cations Aromatic nitrogen cations, polycyclic Nitrogen aromatic Nitrogen polycyclic aromatic compounds Polycyclic aromatic nitrogen cations review) Polycyclic aromatic nitrogen-containing hydrocarbons