J. Kerimo et D. Kalligas, GRAVITATIONAL COLLAPSE OF COLLISIONLESS MATTER IN SCALAR-TENSOR THEORIES - SCALAR WAVES AND BLACK-HOLE FORMATION - ART. NO. 104002, Physical review. D. Particles and fields, 5810(10), 1998, pp. 4002
We consider Oppenheimer-Snyder collapse in scalar-tensor theories and
numerically study the propagation of scalar gravitational waves as wel
l as the status of the relevant black hole theorems. [S0556-2821(98)07
820-5].