Development, integration and inflight testing of an advanced secondary mirror mechanism for SOFIA
High-resolution terahertz spectroscopy with quantum-cascade lasers
NKZhI prevrashha centralnata Sofijska zh gara v intermodalen centar na stolicata
Centralna gara Sofija: mnogo funkcionalen patnicheski terminal
Pravitelstvoto i oshhinata investirat v badeshheto na stolicata
Dryden Flight Research Center: Presentation to Portland State Aerospace Society