C. Stagner, A. Conrad, C. Osterwise, D. G. Beetner and S. Grant, “A practical superheterodyne-receiver detector using stimulated emissions,“ IEEE Transactions on Instrumentation and Measurement, Vol. 60, No. 4, April 2011.
 J. Hertenstein and S. Jagannathan,,”Detection of unintended electromagnetic emissions from super regenerative receivers,” Proc. SPIE 8017, 80170F (2011).
 V. Thotla,M.T.A. Ghasr, M. Zawodniok, S. Jagannathan, S. Agarwal, "Detection and localization of multiple R/C electronic devices using array detectors," Instrumentation and Measurement Technology Conference , 2012 IEEE International, pp.1687-1691, May 2012.
 R. Schmidt, "Multiple emitter location and signal parameter estimation," Antennas and Propagation, IEEE Transactions on , vol.34, no.3, pp. 276- 280, Mar 1986
 F. Gao, A.B. Gershman, "A generalized ESPRIT approach to direction-of-arrival estimation, "IEEESignal Processing Letters, vol.12, no.3, pp.254,257, March 2005
 B. D. Steinberg, Principles of Aperture and Array System Design: Including Random and Adaptive Arrays. New York, NY, USA: Wiley,1976, pp. 9–10.
 Y. D. Huang, M , Barkat, "Near-field multiple source localization by passive sensor array," IEEE Transactions onAntennas and Propagation, vol.39, no.7, pp.968,975, Jul 1991
 R.N. Challa, S. Shamsunder, "High-order subspace-based algorithms for passive localization of near-field sources," Conference Record of the Twenty-Ninth Asilomar Conference onSignals, Systems and Computers, 1995. vol.2, pp.777,781 vol.2, Oct. 30 1995-Nov. 1 1995
 N. Yuen, B. Friedlander, , "Performance analysis of higher order ESPRIT for localization of near-field sources," IEEE Transactions onSignal Processing, vol.46, no.3, pp.709,719, Mar 1998.
 E, Cekli, H. A. Cirpan, "Unconditional maximum likelihood approach for near-field source localization," 8th IEEE International Conference onElectronics, Circuits and Systems, vol.2, pp.753,756 2001
 A.J. Weiss, B. Friedlander, "Range and bearing estimation using polynomial rooting,"IEEE Journal ofOceanic Engineering, vol.18, no.2, pp.130,137, Apr 1993
 D. Starer, A. Nehorai, "Passive localization of near-field sources by path following," IEEE Transactions onSignal Processing, vol.42, no.3, pp.677,680, Mar 1994
 U. Sarac, F.K. Harmanci and T. Akgul, “Experimental analysis of detection and localization of multiple emitters in multipath environments,” IEEE Antennas and Propagation Magazine, vol.50, no.5, pp.61-70, Oct. 2008
 J.A. Cadzow, “A high resolution direction-of-arrival algorithm for narrow-band coherent and incoherent sources,” IEEE Transactions onAcoustics, Speech and Signal Processing, vol.36, no.7, pp.965,979, Jul 1988
 W. Zhi, M. Y –W Chia, "Near-Field Source Localization via Symmetric Subarrays," IEEE Signal Processing Letters, , vol.14, no.6, pp.409,412, June 2007