1. Two-phase flow oscillatory thermal-hydraulic instability -- 2. Oscillatory stability boundary in hydrodynamic interaction of parallel channels and requirements to simulate unstable processes on test facilities -- 3. Simplified correlations for determining the two-phase flow thermal-hydraulic oscillatory stability boundary -- 4. Some notes on the oscillatory flow stability boundary -- 5. Static instability -- 6. Thermal-acoustic oscillations in heated channels -- 7. Instability of condensing flows -- 8. Some cases of flow instability in pipelines.