1. J. Groenenboom and A. G. Yarovoy, in: 8th Int. Conf. on Ground Penetrating Radar, 2000, p. 367.
2. M. W. Holzrichter and G. E. Sleefe, in: Detection and Remediation Technologies for Mines and Minelike Targets V, 1160 (2000).
3. A. H. Gunatllaka and B. A. Baertlein, in: Detection and Remediation Technologies for Mines and Minelike Targets V, 1008 (2000).
4. C. J. Leuschen and R. G. Plumb, IEEE Trans. Geosci. Remote Sensing, 39, No. 5, 929 (2001).
5. V. P. Yakubov, A. S. Omar, V. P. Kutov, et al., in: Proc. 10th Int. Conf. Ground Penetrating Radar, 2004, p. 103.