Issue No.03 - May/June (1985 vol.2)
M. Fridrich , BNR
With abstraction layering and system decomposition, all the user sees is one homogeneous system. In actuality, the architecture is supporting 15 LANs and close to 1000 workstations.
M. Fridrich, W. Older, "Helix: The Architecture of the XMS Distributed File system", IEEE Software, vol.2, no. 3, pp. 21-29, May/June 1985, doi:10.1109/MS.1985.230697