@article {zidek1978deriving,
	title = {Deriving unbiased risk estimators of multinormal mean and regression coefficient estimators using zonal polynomials},
	journal = {Ann. Statist.},
	year = {1978},
	pages = {769{\textendash}782},
	publisher = {JSTOR},
	author = {Zidek, J.V.}
}
