Russia's space monitoring system to return to scanning skies after overhaul - Russia Beyond
Nové okno do vesmíru | Technický týdeník
Chráníme observatoř na vrcholku… | PlanetaOken.cz
Okno / Nurek / Sanglok - Space Surveillance
Cutting-Edge Russian Space Surveillance System now Four Times More Capable - 28.07.2015, Sputnik International
Hvězdárna, dalekohledy, pozorování – planetum
University of Tartu Old Observatory (Hvězdárna, planetárium) • Mapy.cz
Rostec - "Window" to space This optical-electronic space monitoring system is called Okno (Window). It was developed by Krasnogorsky Zavod of the Shvabe holding. Okno is located at an altitude of 2200
Russian Space Surveillance System chief designer Goryuchkin: Space debris to become critical problem in next 10 years