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The critical-frequency method of measuring upper-atmospheric ionization
, 1939E. Appleton, R. Naismith, L. J. Ingram
semanticscholar +1 more source
Atmospheric Pressure Ionization in a Miniature Mass Spectrometer
Analytical Chemistry, 2005Christopher C Mulligan +2 more
exaly
Atmospheric Pressure Ionization LC/M
Environmental Science & Technology, 1994openaire +2 more sources

