DAFIK; JOEDO, Jean Claudia; TIRTA, I Made. On Improving the Students’ Combinatorial Thinking Skill in Solving Rainbow Antimagic Colouring Problem on Cryptography for E-Commerce Security Systems under the Implementation of Research-Based Learning with STEM Approach. Innovare Journal of Education, [S. l.], v. 10, n. 5, p. 21–30, 2022. DOI: 10.22159/ijoe.2022v10i5.45596. Disponível em: https://www.journals.innovareacademics.in/index.php/ijoe/article/view/45596. Acesso em: 14 dec. 2025.