Dupré, M., Cantel, S., Martinez, J., & Enjalbal, C. (2012). Occurrence of C-terminal residue exclusion in peptide fragmentation by ESI and MALDI tandem mass spectrometry. Journal of the American Society for Mass Spectrometry, 23(2), 330-46. https://doi.org/10.1007/s13361-011-0254-1