KALMUL Software Assited by GeoGebra (A New Media for Learning Multivariable Calculus) . Quadratic: J. Inn. Tech. Math. & Math. Educ. [Internet]. 2023 Apr. 29 [cited 2026 Feb. 4];3(1):50-62. Available from: https://ejournal.uin-suka.ac.id/tarbiyah/quadratic/article/view/6507