| Paper: | idn147 |
| Name: | V.D. Vladimirov |
| Company: | Sofia University St. Kl. Ohridski GGF Dept. of Mineralogy, Petrology and Economic Geology |
| Address: | 15, Tzar Osvoboditel Bd. 1000 Sofia |
| Country: | Bulgaria |
| Phone: | 003592 9308 255 |
| Fax: | 003592 44 64 87 |
| Email: | valentin@gea.uni-sofia.bg |
| NDT.net | |15th WCNDT CD-ROM| |