TY - RPRT TI - Sensitivities and variances for fitted parameters of spheres AU - Witzgall, Christoph AU - Franaszek, Marek PY - 2009 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7616 DO - 10.6028/NIST.IR.7616 ER -