@article {8877,
	title = {S-Estimation for Penalized Regression Splines},
	journal = {Journal of Computational and Graphical Statistics},
	volume = {19},
	year = {2010},
	pages = {609-625},
	doi = {10.1198/jcgs.2010.08149},
	url = {http://dx.doi.org/10.1198/jcgs.2010.08149},
	author = {Kukatharmini Tharmaratnam and Gerda Claeskens and Christophe Croux and Matias Salibian-Barrera}
}
