HIDAYAT, Mochammad Amrun; WAHYUNING, Noviani Tri; NINGSIH, Indah Yulia; KUSWANDI, Bambang. Pengembangan Sensor Kimia Berbasis Kertas Untuk Penetapan Kadar Kafein Sampel Kopi. Jurnal Riset Kimia, [S. l.], v. 14, n. 1, p. 43–51, 2023. DOI: 10.25077/jrk.v14i1.589. Disponível em: https://jrk.fmipa.unand.ac.id/index.php/jrk/article/view/589. Acesso em: 17 oct. 2026.