  Two relativistic approaches are considered to evaluate the quasielastic
double-differential and integrated neutrino-nucleus cross sections. One, based
on the relativistic impulse approximation, relies on the microscopic
description of nuclear dynamics using relativistic mean field theory, and
incorporates a description of the final-state interactions. The second is based
on the superscaling behavior exhibited by electron scattering data and its
applicability, due to the universal character of the scaling function, to the
analysis of neutrino scattering reactions. The role played by the vector
meson-exchange currents in the two-particle two-hole sector is also
incorporated and the results obtained are compared with the recent data for
neutrinos measured by the MiniBooNE Collaboration.
