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Calculation of current and order parameter distribution in inhomogeneoussuperconductors is often based on a self-consistent solution of Eilenbergerequations for quasiclassical Green's functions. Compared to the original Gorkovequations, the problem is much simplified due to the fact that the values ofGreen's functions at a given point are connected to the bulk ones at infinity(boundary values) by ``dragging'' along the classical trajectories ofquasiparticles. In finite size systems, where classical trajectories undergomultiple reflections from surfaces and interfaces, the usefulness of theapproach is no longer obvious, since there is no simple criterion to determinewhat boundary value a trajectory corresponds to, and whether it reachesinfinity at all. Here, we demonstrate the modification of the approach based onthe Schophol-Maki transformation, which provides the basis for stable numericalcalculations in 2D. We apply it to two examples: generation of spontaneouscurrents and magnetic moments in isolated islands of d-wave superconductor withsubdominant order-parameters s and d_{xy}, and in a grain boundary junctionbetween two arbitrarily oriented d-wave superconductors. Both examples arerelevant to the discussion of time-reversal symmetry breaking in unconventionalsuperconductors, as well as for application in quantum computing.Comment: 6 pages, Submitted for publication in the proceedings of MS+S2002  conference, Japa

QUASICLASSICAL CALCULATION OF SPONTANEOUS CURRENT IN RESTRICTED GEOMETRIES