UKRAINIAN MATHEMATICAL JOURNAL, vol.71, no.1, pp.64-80, 2019 (SCI-Expanded)
We first classify space-like surfaces in the Minkowski space E-1(4), de Sitter space S-1(3), and hyperbolic space H-3 with harmonic Gauss maps. Then we characterize and present a classification of the space-like surfaces with pointwise 1-type Gauss maps of the first kind. We also give some explicit examples.