| Landis EN 1999. "Micro-macro fracture relationships and acoustic emissions in concrete", Construction and Buildings Materials, 13(1): 65-72. |
| Landis EN 1999. "Micro-macro fracture relationships and acoustic emissions in concrete", Construction and Buildings Materials, 13(1): 65-72. |
.gif "Energy Ocean, 2013")
An ISO 17025 Accredited Laboratory