@article {Simula.simula.554,
	title = {Multivalency of Sonic Hedgehog Conjugated to Linear Polymer Chains Modulates Protein Potency},
	journal = {Bioconjugate Chemistry},
	volume = {19},
	number = {4},
	year = {2008},
	pages = {806-812},
	author = {Wall, Samuel and Saha, Kris and Schaffer, David and Healy, Kevin}
}
