Villardi, Gabriel Porto; Harada, Hiroshi; Kojima, Fumihide; Yano, Hiroyuki (2017). "Multi-Level Protection to Broadcaster Contour and its Impact on TV White Space Availability". IEEE Transactions on Vehicular Technology. 66 (2): 1393–1407. doi:10.1109/TVT.2016.2566675. S2CID206819681.
Villardi, Gabriel Porto; Harada, Hiroshi; Kojima, Fumihide; Yano, Hiroyuki (2016). "Primary Contour Prediction Based on Detailed Topographic Data and Its Impact on TV White Space Availability". IEEE Transactions on Antennas and Propagation. 64 (8): 3619. Bibcode:2016ITAP...64.3619V. doi:10.1109/TAP.2016.2580164. S2CID22471055.
Villardi, Gabriel Porto; Harada, Hiroshi; Kojima, Fumihide; Yano, Hiroyuki (2016). "Primary Contour Prediction Based on Detailed Topographic Data and Its Impact on TV White Space Availability". IEEE Transactions on Antennas and Propagation. 64 (8): 3619. Bibcode:2016ITAP...64.3619V. doi:10.1109/TAP.2016.2580164. S2CID22471055.
Villardi, Gabriel Porto; Harada, Hiroshi; Kojima, Fumihide; Yano, Hiroyuki (2017). "Multi-Level Protection to Broadcaster Contour and its Impact on TV White Space Availability". IEEE Transactions on Vehicular Technology. 66 (2): 1393–1407. doi:10.1109/TVT.2016.2566675. S2CID206819681.
Villardi, Gabriel Porto; Harada, Hiroshi; Kojima, Fumihide; Yano, Hiroyuki (2016). "Primary Contour Prediction Based on Detailed Topographic Data and Its Impact on TV White Space Availability". IEEE Transactions on Antennas and Propagation. 64 (8): 3619. Bibcode:2016ITAP...64.3619V. doi:10.1109/TAP.2016.2580164. S2CID22471055.