Application of a mobile laboratory using a selected-ion flow-tube mass spectrometer (SIFT-MS) for characterisation of volatile organic compounds and atmospheric trace gases oleh R. L. Wagner, N. J. Farren, J. Davison, S. Young, J. R. Hopkins, J. R. Hopkins, A. C. Lewis, A. C. Lewis, D. C. Carslaw, D. C. Carslaw, M. D. Shaw, M. D. Shaw