Recent Developments in Gravitation

I. INVITED LECTURES: Gravitational Particle Creation in the Early Universe -- Voids in the Expanding Universe -- Active and Passive Gravitational Mass of a Schwarzschild Sphere -- Variations of the Speed of Light in Vacuum -- II. CONTRIBUTED PAPERS: Gravitational Fields of Rotating Fluid Bodies -- Minisuperspace Supersymmetric Quantum Model -- Are Some Physical Theories Related with a Specific Number of Dimensions? -- Hamiltonian Formalism for Nonlocal Lagrangians -- Cosmological Inflation Model without a Big-Bang -- The Great Attractor and the Anisotropy of the Microwave Background -- The Shapiro Effect in Eclipsing Binary Systems -- Field Theoretical Model for Nuclear and Neutron Matter: Properties of Compact Objects -- Relativistic Flows around Compact Objects -- An Exact Solution of the Einstein-Yang-Mills Equations -- How to Match the Vaidya Radiating Metric to any Spherically Symmetric Space-time -- 3D Numerical Relativity: Einstein Evolution Equations -- Absence of Singularities in a Cosmological Perfect-Fluid Solution -- Evolution of the Bel-Robinson Tensor for Plane Colliding Gravitational Waves -- Some Space-Time Metrics Admitting Killing Pairs -- Kerr-Schild Metrics: A Gauge for Minkowski -- Homothetic Vector Fields with Isolated Fixed Points in Vacuum Type N Space-Times -- Extension of Geodesics Principle -- Spinor Representations of SO(3) -- Relative Position of a Pair of Planes and Algebras Generated by Two 2-Forms in Relativity -- A Theorem on Signature -- Cases of Multipole Moments Conservation from L-Rigidity -- Invariant Star Products on a Lie Group with an Invariant Symplectic Structure -- Relativistic Invariance of Dirac's Equation Revisited.