Longe, I., & 		Maharaj, A.
(2023).
 Investigating Students’ Understanding of Complex Number and Its Relation to Algebraic Group Using and APOS Theory.
<em>Journal Of Medives : Journal Of Mathematics Education IKIP Veteran Semarang, 7</em>(1), 117 - 134.
doi:10.31331/medivesveteran.v7i1.2332