Jonathon C. Ralston, David W. Hainsworth. Application of ground penetrating radar for coal depth measurement. In Proceedings of the 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '99, Phoenix, Arizona, USA, March 15-19, 1999. pages 2275-2278, IEEE Computer Society, 1999. [doi]
Abstract is missing.