1. Doroodgar, B., M. Ficocelli, B. Mobedi, and G. Nejat, "The search for survivors: Cooperative human-robot interaction in search and rescue environments using semi-autonomous robots," 2010 IEEE International Conference on Robotics and Automation, 2010, May 03-07, 2010.        Google Scholar

2. Yokokohji, Y., M. Kurisu, S. Takao, Y. Kudo, K. Hayashi, and T. Yoshikawa, "Constructing a 3-D map of rubble by teleoperated mobile robots with a motion canceling camera system," Proceedings 2003 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2003) (Cat. No.03CH37453), Vol. 3, 3118–3125.
doi:10.1109/iros.2003.1249636        Google Scholar

3. Wiesner, Anatol, "CW radar based vital signs detection," 2009 European Microwave Conference (EuMC), 1595–1598, September 2009.
doi:10.23919/eumc.2009.5296547        Google Scholar

4. Ivashov, S. I., V. V. Razevig, A. P. Sheyko, and I. A. Vasilyev, "Detection of human breathing and heartbeat by remote radar," PIERS Proceedings, Pisa, Italy, March 28–31, 2004.        Google Scholar

5. Bimpas, Matthaios, Konstantinos Nikellis, Nikolaos Paraskevopoulos, Dimitris Economou, and Nikolaos Uzunoglu, "Development and testing of a detector system for trapped humans in building ruins," 33rd European Microwave Conference, 2003, 999–1002, October 2003.
doi:10.1109/euma.2003.341132        Google Scholar

6. Yarovoy, A.G., J. Matuzas, B. Levitas, and L.P. Ligthart, "UWB radar for human being detection," European Radar Conference, 2005, EURAD 2005, Paris, France, October 03-04, 2005.
doi:10.1109/eurad.2005.1605570        Google Scholar

7. Zaikov, E., J. Sachs, M. Aftanas, and J. Rovnakova, ``Detection of trapped people by UWB radar", 2008.        Google Scholar

8. Filali, B., F. Boone, J. Rhazi, and G. Ballivy, "Design and calibration of a large open-ended coaxial probe for the measurement of the dielectric properties of concrete," IEEE Transactions on Microwave Theory and Techniques, Vol. 56, No. 10, 2322–2328, October 2008.
doi:10.1109/tmtt.2008.2003520        Google Scholar

9. Pena, D., R. Feick, H. D. Hristov, and W. Grote, "Measurement and modeling of propagation losses in brick and concrete walls for the 900-MHz band," IEEE Transactions on Antennas and Propagation, Vol. 51, No. 1, 31–39, January 2003.
doi:10.1109/tap.2003.808539        Google Scholar

10. Oestges, C., B. Montenegro-Villacieros, and D. Vanhoenacker-Janvier, "Modeling propagation into collapsed buildings for radio-localization-based rescue search missions," 1–4, June 2009.
doi:10.1109/aps.2009.5172252        Google Scholar

11. Di Carlofelice, A., E. Di Giampaolo, M. Elaiopoulos, M. Feliziani, M. Roselli, and P. Tognolatti, "Localization of radio emitters into collapsed buildings after earthquake: Measurements of path loss and direction of arrival," International Symposium on Electromagnetic Compatibility --- EMC EUROPE, 1–6, September 2012.
doi:10.1109/emceurope.2012.6396813        Google Scholar

12. DiCarlofelice, Alessandro, Emidio DiGiampaolo, Mauro Feliziani, and Piero Tognolatti, "Experimental characterization of electromagnetic propagation under rubble of a historic town after disaster," IEEE Transactions on Vehicular Technology, Vol. 64, No. 6, 2288–2296, June 2015.
doi:10.1109/tvt.2014.2346580        Google Scholar

13. Teggi, S. and T. di Laurea, ``Metodi geofisici", Facoltà di Ingegneria-Università degli studi di Modena e Reggio Emilia, A.A., 2007/2008.        Google Scholar

14. Martinez, Alex and Alan P. Byrnes, "Modeling dielectric-constant values of geologic materials: An aid to ground-penetrating radar data collection and interpretation," Bulletin (Kansas Geological Survey), No. 247, 1–16, January 2001.
doi:10.17161/kgsbulletin.no.247.20391        Google Scholar

15. Conte, Del and A., ``Il radar penetrante (GPR)", Artemis Diagnostica Edilizia, 22, Ancona, Gennaio, 2004.        Google Scholar

16. Philippakis, C. Martel and D. Kemp, "Application of FSS structures to selectively control the propagation of signals into and out of buildings," ERA Technology, 1-54, 2004.        Google Scholar