http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Anionic adducts of oligosaccharides by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry
Yang Cai, Yanjie Jiang, Richard B. Cole.
Matrix assisted laser desorption ionization