TY - RPRT TI - Planar test structures for characterizing impurities in silicon AU - Buchler, M G AU - David, J M AU - Mattis, R L AU - Phillips, W E AU - Thurber, W R PY - 1976 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 400-21 DO - 10.6028/NBS.SP.400-21 ER -