Let $R^{1,2}$ be the Minkowski 3-space, I would like to know any references about minimal (maximal) orientable Lorentzian surfaces in $\mathbb{R}^{1,2}$, including examples and maybe general theories, say something like Weierstrass representation. Here by minimal (maximal) I simply mean that the Lorentzian surface, as a submanifold of $\mathbb{R}^{1,2}$, has mean curvature 0.

Grazie!