ČAPKOVÁ, M. ILS – INSTRUMENT LANDING SYSTEM GROUND-BASED INSTRUMENT APPROACH SYSTEM. Perner’s Contacts, [S. l.], v. 4, n. 4, p. 39–44, 2009. Disponível em: https://pernerscontacts.upce.cz/index.php/perner/article/view/1180. Acesso em: 7 kvě. 2024.