List of Articles گاف انرژی HOMO–LUMO Open Access Article Abstract Page Full-Text 1 - Density Functional Theory studies of purine bases adenine and guanine Leile Rahimi Ahar Zahra Javanshir Open Access Article Abstract Page Full-Text 2 - Density functional theory studies of resorcinol and phenol Open Access Article Abstract Page Full-Text 3 - Density functional theory studies of pyrimidine bases thymine, cytosine and uracil