Hossain A.K.M.M., Van H.N., Jin Y. and Soh W.-S. “Indoor Localization Using Multiple Wireless Technologies,” In Proceedings of IEEE International Conference on Mobile Adhoc and Sensor Systems, 2007.
 A. Baggio and K. Langendoen, ”Monte-carlo localization for mobile wireless sensor networks,” In: 2nd Int. Conference on Mobile Ad-hoc and Sensor Networks, 2006.
 P. Bahl and V. N. Padmanabhan, “RADAR: An In-Building RF-Based User Location and Tracking System,” in INFOCOM. IEEE, 2000.
 Y.T. Chan, K.C. Ho, “A simple and efficient estimator for hyperbolic location,” in IEEE Trans., 1994.
 B. Dil, S. Dulman, and P. Havinga, “Range-based localization in mobile sensor networks,” in Proc. EWSN, Zurich, 2006.
 S. Gezici, Z. Tian, G. G. , H. K. amd A.F. Molisch, H. Poor, and Z. Sahinoglu, “Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks,” IEEE Signal Processing Mag., 2005.
 D. K. Goldenberg, P. Bihler, M. and Cao, J. Fang, “Localization In Sparse Networks using Sweeps,” in Proceedings of ACM MOBICOM,, 2006.
 T. He, C. Huang, B. M. Blum , J. A. Stankovic and T. Abdelzaher, “Range-free Localization Schemes for Large Scale Sensor Networks,” in Proceedings of ACM MOBICOM, 2003.
 L. Hu and D. Evans, "Localization for mobile sensor networks," in Proceedings of ACM MOBICOM, 2004.
 T. Li, A. Ekpenyong, and Y.-F. Huang, “A location system using asynchronous distributed sensors,” in Proceedings of IEEE INFOCOM, 2004.
 X. Li and K. Pahlavan, “Super-resolution toa estimation with diversity for indoor geolocation,” in IEEE Trans. Wireless Commun., 2004.
 S. Kaul, K. Ramachandran, P. Shankar, S. Oh, M. Gruteser, I. ˇSeˇskar, and T. Nadeem, “Effect of antenna placement and diversity on vehicular networks communication,” in Proc. SECON, 2007.
 K. Kleisouris, Y. Chen, J. Yang, and R. P. Martin, “The impact of using multiple antennas on wireless localization,” in Proc. SECON, 2008.
 JY. Lee and R.A. Scholtz, “Ranging in a dense multipath environment using an UWB radio link,” IEEE Trans. Select. Areas Commun., 2002.
 D. Niculescu and B. Nath,” Ad hoc positioning system using AoA,” in Proceedings of IEEE INFOCOM, 2003.
 D. Niculescu, and B. Nath, ”Error Characteristics of Ad Hoc Positioning Systems,” In Proceedings of ACM MOBICOM, 2004.
 D. Niculescu and B. Nath, “VOR base stations for indoor 802.11 positioning,” in Proceedings of ACM MOBICOM, 2004.
 N. Patwari and A. O. Hero III, “Using Proximity and Quantized RSS for Sensor Localization in Wireless Networks,” Workshop on Wireless Sensor Networks and Applications, 2003.
 R. Peng and M. L. Sichitiu, “Robust, Probabilistic, Constraint- Based Localization for Wireless Sensor Networks,” in Proc. SECON, 2005.
 N. B. Priyantha, A. Chakraborty, and H. Balakrishnan, “The Cricket location-support system,” in Proceedings of ACM MOBICOM, 2000.
 N. B. Priyantha, H. Balakrishnan, E. D. Demaine, and S. Teller, “Mobile-Assisted Localization in Wireless Sensor Networks,” in Proceedings of IEEE INFOCOM , 2005.
 T. S. Rappaport, J. H. Reed and B. D. Woerner, “Position location using wireless communications on highways of the future,” IEEE Communications Magazine, 1996.
 M. Rudafshani and S. Datta. Localization in wireless sensor networks. In Information Processing in Sensor Networks , 2007..
 H.C. Schau, A.Z. Robinson,” Passive source localization employing intersecting spherical surfaces from time-ofarrival differences,” IEEE Trans., 1987.
 F. Sottile and M. A. Spirito, “Robust Localization for Wireless Sensor Networks,” in IEEE SECON. 2008
 A. Uchiyama, S. Fujii, K. Maeda, T. Umedu, H. Yamaguchi and T. Higashino, “Ad-hoc Localization in Urban District”, in Proceedings of IEEE INFOCOM, 2007.
 Widyawan, M. Klepal and D. Pesch, “Influence of Predicted and Measured Fingerprint on the Accuracy of RSSI-based Indoor Location System,” IEEE WPNC, 2007.
 K. Yedavalli, B. Krishnamachari, S. Ravula, and B. Srinivasan, "Ecolocation: A technique for RF-based localization in wireless sensor networks," in Proc. IPSN, 2005.
 J. Yi, S. Yang, and H. Cha. “Multi-hop-based monte carlo localization for mobile sensor networks,” in Proc. SECON, 2007.
 M. Youssef and A. Agrawala, “Small-scale compensation for WLAN location determination systems,” in Proceedings of WCNC, 2003.
 IEEE Standard for Information Technology, ”Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) specifications for Low Rate Wireless Personal Area Networks (LR-WPANS),” Jul. 2006.