Physical Review LettersSilvestri, Graham, and Toennies Reply:Walter Silvestri, Andrew P. Graham, J. P. ToenniesPublished Feb 28, 2000• 2 citationsPublisherAbstractA Reply to the Comment by W. Theis.Received 4 October 1999DOI:https://doi.org/10.1103/PhysRevLett.84.2039©2000 American Physical SocietyDOI10.1103/physrevlett.84.2039