Isotropization of Bianchi class A models with curvature for a minimally coupled scalar–tensor theory

We look for necessary isotropization conditions of Bianchi class A models with curvature in the presence of a massive and minimally coupled scalar field when a function ELLof the scalar field tends to a constant, diverges monotonically or with sufficiently small oscillations. Isotropization leads the metric functions to tend to a power or exponential law of the proper time t and the potential, respectively, to vanish as t-2 or to a constant. Moreover, isotropization always requires late-time accelerated expansion and flatness of the universe.