Wardhana, Masruri, 		Ilminnafik, Nasrul, AND 		Sumarji, Sumarji.
" Pengaruh Panjang Pipa Katalis Annulus Konsentris Pada HCS (Hydrocarbon Cracking System) Terhadap Torsi Motor Bakar 4-Langkah" <em>STATOR: Jurnal Ilmiah Teknik Mesin</em> [Online], Volume 1 Number 1 (1 January 2018)