A low-latency and energy-efficient algorithm for convergecast in wireless sensor networks. - Sarma Upadhyayula; Valliappan Annamalai; Sandeep K. S. Gupta (GLOBECOM, 2003)

On tree-based convergecasting in wireless sensor networks. - Valliappan Annamalai; Sandeep K. S. Gupta; Loren Schwiebert (WCNC, 2003)

Ayushman: A Wireless Sensor Network Based Health Monitoring Infrastructure and Testbed. - Krishna K. Venkatasubramanian; Guofeng Deng; Tridib Mukherjee; John Quintero; Valliappan Annamalai; Sandeep K. S. Gupta (DCOSS, 2005)