artigo BREVES REFLEXÕES SOBRE A FELICIDADE NO MUNDO CONTEMPORÂNEO
Gravitational interaction of massless particles
Identification of black holes
On the collision of gravitational plane waves: a class of soliton solutions
On the structure of gravitational wave bursts: Implosion with finite kinetic energy
Classical general relativity || Non-Radial Oscillations of Stars in General Relativity: A Scattering Problem