Help With PDE

[NYUmathgeek]

Hi all...need a little help with this one...

I need to find the Green's function for the half space Neumann problem in the domain z>0. i.e. Laplacian u=f in D, du/dn=h on the boundary of D.

Any ideas?

[Feynman]

ya of corse
you can see http://www.ma3n.org/pages/jazar/
and problemes elliptiques