@conference{139591,
  author = {J Roberts and James Olthoff and R Van and James Whetstone},
  title = {Measurements on the NIST GEC Reference Cell, SPIE, Vol. 1392},
  year = {1991},
  month = {1991-01-01},
  publisher = {Advanced Techniques for Integrated Circuit , Santa Clara, CA},
  language = {en},
}