Puspithasari, H., & 		Pujiastuti, H.
(2021).
 Analysis of Students' Understanding of Mathematical Concepts in Solving Comparative Problems.
<em>Journal Of Medives : Journal Of Mathematics Education IKIP Veteran Semarang, 5</em>(1), 181-188.
doi:10.31331/medivesveteran.v5i1.1173