1. Saipulla A, Westphal C, Liu B, Wang J: Barrier coverage of line-based deployed wireless sensor networks. INFOCOM IEEE 2009, 127-135.
2. Wang Y, Cao G: Barrier coverage in camera sensor networks. In Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing. ACM; 2011:12-12.
3. Yang T, Fan PG, Mu DJ: Maximizing the lifetime of sliding wireless sensors in barrier coverage. Appl. Mech. Mater 2012, 157: 503-506.
4. Girard AR, Howell AS, Hedrick JK: Border patrol and surveillance missions using multiple unmanned air vehicles. In Proc. IEEE CDC’04. Atlantis, Paradise Island, Bahamas; December 2004.
5. Haddal CC, Gertler J: Homeland security: unmanned aerial vehicles and border surveillance. CRS Report for Congress; July 2008.