A generalization of Dixon's description of extended bodies
A generalized plane wave metric
A principle involving the variation of the metric tensor in a stationary space-time of general relativity
A propos de la conjecture de la balle liquide en relativité générale
A scalar geodesic deviation equation and a phase theorem.
A study on the one parameter Lorentzian spherical motions.
An explicit determination of the non-self-adjoint wave equations on curved space-time that satisfy Huygens' principle. Part I : Petrov type N background space-times
An explicit determination of the Petrov type D spacetimes on which Weyl's neutrino equation and Maxwell's equations satisfy Huygens' principle
Application of the Weyl curvature tensor to description of the generalized Reissner-Nordstrøm space-time
The Weyl curvature tensor for the generalized Reissner-Nordstrοm space-time is determined and theorems related to the Penrose conjecture are proved.