Lagrangian submanifolds in para-complex Euclidean space

We address the study of some curvature equations for distinguished submanifolds in para-K"ahler geometry. We first observe that a para-complex submanifold of a para-K"ahler manifold is minimal. Next we describe the extrinsic geometry of Lagrangian submanifolds in the para-complex Euclidean space D^n and discuss a number of examples, such as graphs and normal bundles. We also characterize those Lagrangian surfaces of D^2 which are minimal and have indefinite metric. Finally we describe the Lagrangian self-similar solutions of the Mean Curvature Flow which are SO(n)-equivariant.