Laser desorption/ionization cluster studies for calibration in mass spectrometry K. Blaum, G. Huber, H.-J. Kluge and L. Schweikhard Eur. Phys. J. D, 24 1-3 (2003) 145-148 Published online: 03 July 2003 DOI: 10.1140/epjd/e2003-00131-8