@article {hall_testing_2000,
	title = {Testing for monotonicity of a regression mean by calibrating for linear functions},
	journal = {Annals of Statistics},
	year = {2000},
	pages = {20{\textendash}39},
	url = {http://www.jstor.org/stable/2673980},
	author = {Hall, Peter and Heckman, Nancy E.}
}
