1. Eiceman GA, Karpas Z (2005) Ion Mobility Spectrometry, Second Edition. CRC Press, ISBN 9780849322471
2. Blanchard WC (1989) Electric field control in ion mobility spectrometry. United States Patent and Trademark Office, USA, p 4855595
3. Buryakov IA, Krylov EV, Nazarov EG, Rasulev UK (1993) A new method of separation of multi-atomic ions by mobility at atmospheric pressure using a high-frequency amplitude-asymmetric strong electric field. Int J Mass Spectrom Ion Process 128:143–148
4. Algom A (1993) Ion mobility spectrometer applying slightly focusing field—has alternating metal rings and spacers around drift chamber for improved performance. United States Patent and Trademark Office, USA, p 5235182
5. Doering H, Hartmann E (1992) Simultanous ion mobility detection of different analytes—esp. war gases in air, by separate measurements of ion current at different electric field asymmetrics. World Intellectual Property Organization, Geneva, WO/1992/018859