TY - CONF AU - Pibida, Leticia AU - N{omlat}rtersh{amlat}user, W AU - Bushaw, B C2 - ECAMP VII, Berlin, GE DA - 2001-01-01 LA - en PB - ECAMP VII, Berlin, GE PY - 2001 TI - Resonance Ionization Mass Spectrometry Measurements of 135Cs/137Cs Isotopic Ratio ER -