Ahmad Firdaus Zawawil Anwar. “ECO-THRUST: DESIGNING A LIQUID HYDROGEN ROCKET NOZZLE WITH COMPRESSED AIR VALIDATION FOR SUSTAINABLE PROPULSION”. Jurnal Kejuruteraan, Teknologi and Sains Sosial (JKTSS), vol. 12, no. 1, Jan. 2026, pp. 37-43, https://jktss.puo.edu.my/jurnalpuo/index.php/jurnal/article/view/314.