Garcia, J.T. and Alvarez-Arenas, T.G. 2016. Optimization of the Design of Multifrequency Annular Arrays for Very Wide Band Operation. Elektronika ir Elektrotechnika. 22, 5 (Oct. 2016), 89 - 93. DOI:https://doi.org/10.5755/j01.eie.22.5.16350.