1.
Nopriana T, Asnawati S, Herman T, Martadiputra BAP, Dejarlo JO. Investigating ontogenic and didactical obstacles faced by vocational high school students in solving counting rules problems. Int. J. Didact.Math Distance Educ. [Internet]. 2024 Sep. 20 [cited 2024 Nov. 21];1(2):102-14. Available from: https://jurnal.ut.ac.id/index.php/ijdmde/article/view/9524