%0 Journal Article %J Journal of the American Society for Mass Spectrometry %D 1997 %T Positive ion formation in the ultraviolet matrix- assisted laser desorption/ionization analysis of oligonucleotides by using 2,5-dihydroxybenzoic acid %A Tang, Wei %A Nelson, Christine M. %A Zhu, Lin %A L. M. Smith %B Journal of the American Society for Mass Spectrometry %V 8 %P 218-224 %@ 1044-0305 %G English %R 10.1016/s1044-0305(96)00237-1