Dubrovka, Fedir F.Ovsianyk, Yuriy A.Stepanenko, Petro Ya.Zakharchenko, Oksana S.2014-03-172014-03-172012Wideband matching the dual frequency coaxial waveguide feed / Fedir F. Dubrovka, Yuriy A. Ovsianyk, Petro Ya. Stepanenko, Oksana S. Zakharchenko // Telecommunication Sciences : international research journal. – 2012. – Vol. 3, N. 2(5). – P. 53–60. – Bibliogr.: 9 ref.https://ela.kpi.ua/handle/123456789/7014enArticleРр. 53-60621.372.85