TY - RPRT TI - 1998 CODATA recommended values of the fundamental constants of physics and chemistry AU - Mohr, P J AU - Mohr, P J AU - Taylor, B N PY - 2001 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 961e2001 DO - 10.6028/NIST.SP.961e2001 ER -