Cahaya Annissaa’ Fathonah, and Utaminingsih Linarti. 2019. “Penentuan Open Closed Fasilitas Tempat Pembuangan Sampah Dengan Mempertimbangkan Design Fasilitas Dan Sarana Pendidikan Formal”. Limits: Journal of Mathematics and Its Applications 16 (1):27-38. https://journal.its.ac.id/index.php/limits/article/view/5406.