Ralph F. Pombo

Graded-period multilayer structures for X-ray optics

Steven Falabella, Peter J. Biltoft, Ralph F. Pombo, 1993, Optics & Photonics.

Low-Z1/low-Z2 multilayer x-ray optical thin films

Peter J. Biltoft, Ralph F. Pombo, 1992, Optics & Photonics.

Repair of x-ray multilayer optics by use of overcoating techniques

Peter J. Biltoft, Ralph F. Pombo, 1994, Optics & Photonics.