TY - JOUR AU - Leticia Pibida AU - C McMahon AU - W Nortershauser AU - B Bushaw C2 - SPIE Meeting DA - 2008-10-16 14:10:14 LA - en PB - SPIE Meeting PY - 2008 TI - Comparison of Resonance Ionization Mass Spectrometry Systems for the Determination of 135Cs/137Cs Ratios ER -