TY - CONF A1 - Weidner, Steffen A1 - Falkenhagen, Jana A1 - Schulze, Rolf-Dieter T1 - Sample spot heterogeneity investigated by MALDI-imaging mass spectrometry T2 - 18th International Mass Spectrometry Conference T2 - 18th International Mass Spectrometry Conference CY - Bremen, Germany DA - 2009-08-30 PY - 2009 AN - OPUS4-19989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -