Application and evaluation of solvent-free matrix-assisted laser desorption/ionization mass spectrometry for the analysis of derivatized fullerenes. - Kotsiris SG; Vasil'ev YV; Streletskii AV; Han M; Mark LP; Boltalina OV; Chronakis N; Orfanopoulos M; Hungerbühler H; Drewello T (European journal of mass spectrometry (Chichester, England), 2006)