Stabilization for the Wave Equation on Exterior Domains -- Carleman Estimate and Decay Rate of the Local Energy for the Neumann Problem of Elasticity -- Microlocal Defect Measures for Systems -- Strong Uniqueness for Laplace and Bi-Laplace Operators in the Limit Case -- Stabilization for the Semilinear Wave Equation in Bounded Domains -- Recent Results on Unique Continuation for Second Order Elliptic Equations -- Strong Uniqueness for Fourth Order Elliptic Differential Operators -- Second Microlocalization Methods for Degenerate Cauchyโ{128}{148}Riemann Equations -- A Gรคrding Inequality on a Manifold with Boundary -- Some Necessary Conditions for Hyperbolic Systems -- Strong Unique Continuation Property for First Order Elliptic Systems -- Observability of the Schrรถdinger Equation -- Unique Continuation from Sets of Positive Measure -- Some Results and Open Problems on the Controllability of Linear and Semilinear Heat Equations