  For entire spacelike stationary 2-dimensional graphs in Minkowski spaces, we
establish Bernstein type theorems under specific boundedness assumptions either
on the W-function or on the total (Gaussian) curvature. These conclusions imply
the classical Bernstein theorem for minimal surfaces in 3-dimensional Euclidean
space and Calabi's theorem for spacelike maximal surfaces in 3-dimensional
Minkowski space.
