Contributions : Obergurgl, Austria, January 29 - February 3, 2005 / 2nd International Conference on Proton Transfer Reaction Mass Spectrometry and its Applications / Institut für Ionenphysik der Leopold-Franzens-Universität Innsbruck. Ed.: Armin Hansel ; Tilmann Märk. Innsbruck : IUP - Innsbruck Univ. Press, 2005