Habib Ullah, M., M. T. Islam, J. S. Mandeep, N. Misran, and N. Nikabdullah. “A Compact Wideband Antenna on Dielectric Material Substrate for K Band”. Elektronika Ir Elektrotechnika, vol. 123, no. 7, Sept. 2012, pp. 75-78, doi:10.5755/j01.eee.123.7.2378.