Rahmawati, Lailia, Achmad Maulana Hakimuddin, and Izzatul Umami. “Implementasi Sensor Gas MQ-136 Dan MQ-137 Untuk Mendeteksi Kesegaran Daging Sapi Menggunakan Metode Neural Network”. Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 12, no. 1 (April 28, 2020): 26-36. Accessed October 7, 2025. https://ejournal.ft-undar.ac.id/index.php/intake/article/view/138.