%0 Journal Article %A Bier, Dirk %A Hartmann, Rudolf %A Holschbach, Marcus %T Collision-induced dissociation studies of caffeine in positive electrospray ionisation mass spectrometry using six deuterated isotopomers and one N1-ethylated homologue %J Rapid communications in mass spectrometry %V 27 %N 8 %@ 0951-4198 %C New York, NY %I Wiley Interscience %M FZJ-2014-00400 %P 885 - 895 %D 2013 %F PUB:(DE-HGF)16 %9 Journal Article %U <Go to ISI:>//WOS:000316624400005 %$ pmid:23495058 %R 10.1002/rcm.6520 %U https://juser.fz-juelich.de/record/150330