%0 Journal Article %J Journal of Proteome Research %D 2021 %T Internal Fragment Ions Disambiguate and Increase Identifications in Top-Down Proteomics %A Rolfs, Z. %A Smith, L. M. %B Journal of Proteome Research %V 20 %P 5412-5418 %8 Dec %@ 1535-3893 %G eng %M WOS:000744124200017 %R 10.1021/acs.jproteome.1c00599