@article {1340699,
	title = {Using Protein Charge Ladders to Estimate the Effective Charges and Molecular Weights of Proteins in Solution},
	journal = {Analytical Chemistry},
	volume = {69},
	year = {1997},
	note = {542},
	pages = {575-580},
	author = {Gao, J. and Whitesides, G. M.}
}
