TY - JOUR AU - Djuric, N AU - Bell, E AU - Dunn, G C2 - International Journal of Mass Spectrometry DA - 1993-01-01 00:01:00 LA - en M1 - 123 PB - International Journal of Mass Spectrometry PY - 1993 TI - Crossed beams measurements of absolute cross sections for electron impact ionization of S+ ER -