Dergiler / Journal of Universal Mathematics / 2019 / Cilt: 2 - Sayı: 1ON THE SIGMA INDEX OF THE CORONA PRODUCTS OF MONOGENIC SEMIGROUP GRAPHSNihat Akgüneş, Yaşar NACAROĞLUDergiJournal of Universal MathematicsSayı2019 · Cilt: 2 - Sayı: 1Sayfa68–74DOI—