SEARCH Articles Figures Tables Aromatic fused-ring Aromaticity aromatic heterocycles Aromaticity fused ring aromatics Aromaticity heterocyclics Fused heterocyclic Fused rings Fused rings, aromaticity Fused-ring aromatics Heterocycles aromatic Heterocycles aromatic, 5-ring Heterocycles aromatization Heterocycles fused Heterocyclic aromatics