Qualitative analysis of a scalar-tensor theory with exponential   potential
  A qualitative analysis of a scalar-tensor cosmological model, with an exponential potential for the scalar field, is performed. The phase diagram for the flat case is constructed. It is shown that solutions with an initial and final inflationary behaviour appear. The conditions for which the scenario favored by supernova type Ia observations becomes an attractor in the space of the solutions are established. 
A.B. Batista, J.C. Fabris, S.V.B. Goncalves and J. Tossa