I am looking for some more background on the 1980/81 "S/F-Unix" system. Gottfried W. R. Luderer, H. Che, J. P. Haggerty, Peter A. Kirslis, W. T. Marshall: A Distributed UNIX System Based on a Virtual Circuit Switch. SOSP 1981: 160-168

I have that paper, and Bill Marshall was kind enough to provide a lot of info. I think that Gottfried Luderer may have some further background, in particular on how this work relates to earlier distributed file system projects at Bell Labs. Would anybody have a current e-mail address for him? Paul