Chen, X., Tirado, M., Steill, J. D., Oomens, J., & Polfer, N. C. (2011). Cyclic peptide as reference system for b ion structural analysis in the gas phase. Journal of Mass Spectrometry, 46(10), 1011-1015. https://doi.org/10.1002/jms.1982 (Original work published 2025)
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