Ptáček, Pavel. „MONITORING OF THE EUROPEAN WIDE AREA GNSS-1 THE NAVIGATION APPLICATION OF CIVIL AVIATION". Perner’s Contacts 6, no. 2 (červenec 15, 2011): 124–134. Viděno listopad 25, 2024. https://pernerscontacts.upce.cz/index.php/perner/article/view/837.