Hsien-Cheng Weng, Hope Chan, Eric Hsiao-Kuang Wu, Gen-Huey Chen. A 2-Approximation Double-Tree Algorithm for Correlated Data Gathering in Wireless Sensor Networks. In Proceedings of the Global Communications Conference, 2007. GLOBECOM 07, Washington, DC, USA, 26-30 November 2007. pages 898-902, IEEE, 2007. [doi]
Abstract is missing.