Darmawan, Marten, Ignatius Felix Raharjo, Lucky Andreas, Nanda Viriya, Naomi Laras Asmoro, Rafael Evan Pradipa, and Arka Soewono. 2022. “Rancang Bangun Alat Tamping Kopi Berbasis Sistem Pneumatik Menggunakan Solenoid Valve”. Cylinder : Jurnal Ilmiah Teknik Mesin 8 (2):29-34. https://doi.org/10.25170/cylinder.v8i2.4866.