Belgibaev R, Ivanov D, Ivanov V, Ryabova N, Ryabova M. ENGINEERING DEVELOPMENT OF PASSIVE IONOSONDE TO STUDY THE EFFECT OF THE BLACKOUT ON HF COMMUNICATION. JAES [Internet]. 2016 Dec. 15 [cited 2026 Jul. 12];14(4). Available from: https://asistent.ceon.rs/index.php/jaes/article/view/9286