Applied Spectroscopy59(4),393–400, April2005. The publisher's exact byline is P.Matousek, I.P.Clark, E.R.C.Draper, M.D.Morris, A.E.Goodship, N.Everall, M.Towrie, W.F.Finney and A.W.Parker. Abstract: collection regions laterally offset from the excitation spot change surface/subsurface spectral contributions; the physical feasibility sample was trans-stilbene powder beneath1mm of PMMA powder, with a19-fold unprocessed buried-layer contrast improvement. The abstract is the verified locator for this material experiment; no specific offset or wavelength is inferred from inaccessible full text.