OLBRICH, Philipp. Transparency from Space: North Korea through the Eyes of the United States. Journal of Regional Security, [S. l.], v. 14, n. 1, p. 33–38, 2019. Dostupno na: https://asistent.ceon.rs/index.php/jouregsec/article/view/22807. Pristupljeno: 12 jul. 2026.