@article{O'Donnell2005,
	title = {A Bayesian approach to imposing curvature on distance functions},
	author = {Christopher J. O'Donnell and Timothy J. Coelli},
	journal = {Journal of Econometrics},
	month = {Jun},
	number = {2},
	pages = {493--523},
	url = {http://www.sciencedirect.com/science/article/B6VC0-4CVX0MM-2/2/53e6cf795918cbf1f6c775d5c8e43590},
	volume = {126},
	year = {2005},
	biburl = {http://www.bibsonomy.org/bibtex/2203f9231192210e3694cb0858fd60085/smicha},
	description = {Journal of Econometrics},
	keywords = {European railways }
}