The surface critical behaviour is studied directly in fixed spatial dimensions d=4-\epsilon<4 without resort to the \epsilon expansion. Generalization of the massive field theory approach appropriate to the description of the standard semi-infinite n-vector model with the surface term \case{1}{2}c_0\int_{\partial V}\phi^2 is presented. This involves an additive shift of the surface enhancement c_0 similar to the bare mass shift in superrenormalizable field theories. Explicit two-loop calculations in three space dimensions yield numerical estimates of surface critical exponents of the special phase transition. Our results are in good agreement with the most recent Monte Carlo simulations.Comments: Figs. 0, Refs. 44, Tabs. 5.
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