The process e(+)e(-)->b(b)over-bar-W+W- at the next linear collider in the Minimal Supersymmetric Standard Model

The complete matrix element for e(+)e(-) --> b (b) over bar W+W- is computed at tree-level within the Minimal Supersymmetric Standard Model. Rates of interest to phenomenological analyses at the Next Linear Collider are given. In particular, we study: t (t) over bar production and decay t (t) over bar --> (bW(+))((b) over bar W-); ZH production followed by Z --> b (b) over bar and H --> W+W-; AH production followed by A --> b (b) over bar and H --> W+W-; hW(+)W(-) production followed by h --> b (b) over bar. Top and Higgs finite width effects are included, as well as all those of the irreducible backgrounds.