Line Shapes in Ion Cyclotron Resonance Spectra.- Quantum Mechanical Description of Collision-Dominated Ion Cyclotron Resonance.- Improvement of the Electric Potential in the Ion Cyclotron Resonance Cell.- Thermodynamic Information from Ion-Molecule Equilibrium Constant Determinations.- Pulsed Ion Cyclotron Resonance Studies with a One-Region Trapped Ion Analyzer Cell.- Fourier Transform Ion Cyclotron Resonance Spectroscopy.- Mechanistic Studies of some Gas-Phase Reactions of O-? Ions with Organic Substrates.- Studies in the Chemical Ionization of Hydrocarbons.- Gas-Phase Polar Cycloaddition Reactions.- An Ion Cyclotron Resonance Study of an Organic Reaction Mechanism.- Positive and Negative Ionic Reactions at the Carbonyl Bond in the Gas-Phase.- Ion Chemistry of (CH3)3PCH2, (CH3)3PNH, (CH3)3PNCH3 and (CH3)3PO.