N. Patwari, J. N. Ash, S. Kyperountas, A. O. Hero III, R. L. Moses, and N. S. Correal, “Locating the Nodes: Cooperative Localization in Wireless Sensor Networks,” IEEE Signal Processing Magazine, vol. 22, no. 4, pp. 54–68, July 2005.
 X. Jun, L. R. Ren, and J. D. Tan, “Research of TDOA based self-localization approach in wireless sensor network,” in proceedings of IEEE International Conference on Intelligent Robots and Systems, Beijing, pp. 2035–2040, October 2006.
 J. Smith and J. Abel, “Closed-form least-squares source location estimation from range-difference measurements,” IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 35, pp. 1661–1669, December 1987.
 Y. Huang, J. Benesty, G. W. Elko, and R. M. Mersereau, “Real-time passive source localization: a practical linear-correction least-squares approach,” IEEE Transactions On Speech And Audio Processing, vol. 9, no. 8, pp. 943–956, November 2001.
 T. J. Abatzoglou, J. M. Mendel, and G. A. Harada, “The constrained total least squares technique and its applications to harmonic superresolution,” IEEE Transactions on Signal Processing, vol. 39, no. 5, pp. 1070–1087, May 1991.