Park, H.-K., and J. Lee. “Procurements (Purchase or R&D) for Ballistic Missile Defense Systems: Focusing on THAAD, SM-3, and L-SAM”. 2018. Journal of Advances in Military Studies, vol. 1, no. 1, Sept. 2018, pp. 1-17, doi:10.37944/jams.v1i1.7.