@article {1340772, title = {Correlation Between the Charge of Proteins in Solution and in the Gas Phase Investigated by Protein Charge Ladders, Capillary Electrophoresis, and Electrospray Ionization Mass Spectrometry}, journal = {J. Phys. Chem. B}, volume = {102}, year = {1998}, note = {615}, pages = {10596-10601}, author = {Carbeck, J. D. and Severs, J. C. and Gao, J. and Wu, Q. and Smith, R. D. and Whitesides, G. M.} }