@article {Crai:Rupp:Carr:Josh:Good:spat:2007,
	title = {Spatially Adaptive Bayesian Penalized Splines with Heteroscedastic Errors},
	journal = {Journal of Computational and Graphical Statistics},
	volume = {16},
	number = {2},
	year = {2007},
	pages = {265{\textendash}288},
	keywords = {Heteroscedasticity, MCMC, Multivariate smoothing, Regression splines, spatially adaptive penalty, thin-plate splines, Variance functions},
	author = {Crainiceanu, C and Ruppert, D. and Carroll, Raymond J. and Joshi, Adarsh and Goodner, Billy}
}
@article {Carr:Rupp:Crai:Tost:Kara:nonl:2004,
	title = {Nonlinear and Nonparametric Regression and Instrumental Variables},
	journal = {Journal of the American Statistical Association},
	volume = {99},
	number = {467},
	year = {2004},
	pages = {736{\textendash}750},
	keywords = {Bayesian methods, Identifiability, Measurement error, Simulation extrapolation, Splines, structural modeling},
	author = {Carroll, Raymond J. and Ruppert, D. and Crainiceanu, C and Tosteson, Tor D. and Karagas, Margaret R.}
}
