1. Gray, D.: ‘Oversized elements for high efficiency extremely high frequency boresight Array’, 2001, PhD, University of Manitoba
2. Lindenblad, N.E.: ‘Directive antenna system’, (United States patent US2,370,053)
3. Carter, P.S.: ‘Antenna system’, (United States patent US2,407,057)
4. Dispersion measurements of one-element short backfire (SBF) antennas