Obasi, Chinedu. “Application of Logistic Differential Equation to Investigate The Extent of Emphasizing Stimulus Variation in Mathematics Instruction”. SJME (Supremum Journal of Mathematics Education) 3, no. 1 (January 1, 2019): 11–17. Accessed May 4, 2024. https://journal.unsika.ac.id/index.php/supremum/article/view/1433.