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2. Versatile New Ion Source for the Analysis of Materials in Open Air under Ambient Conditions;Cody;Anal. Chem.,2005
3. DART: Direct Analysis in Real Time for Drugs, Explosives, Accelerants, Chemical Agents and More…;Cody,2005
4. R.G. Cooks Miniature Mass Spectrometers and Other Developments for Explosive and CW Detection 17th ASMS Sanibel Conference on Mass Spectrometry: MS in Forensic Science and Counterterrorism 2005
5. Über Ionisation durch Metastabile Atome;Penning;Naturwissenschaften,1927