Zaldiansyah, A., Widianto, N., Yogaswara, Y.H. and Ruyat, Y. 2022. Analysis of importance priority to be studied on igniter system of 450 caliber X rocket . Defense and Security Studies. 3, (Dec. 2022), 130–133. DOI:https://doi.org/10.37868/dss.v3.id212.