  Spontaneous fission barriers, quadrupole inertia, and zero-point
quadrupole-energy corrections are calculated for 252,256,258Fm in the framework
of the self-consistent Skyrme-Hartree-Fock+BCS theory. Two ways of computing
dynamical inertia are employed: the Gaussian Overlap Approximation to the
Generator Coordinate Method and cranking ansatz. The Skyrme results are
compared with those of the Gogny-Hartree-Fock-Bogolyubov model.
