@article {chen2010uncertainty,
	title = {Uncertainty and the conditional variance},
	journal = {Statistics and probability letters},
	volume = {80},
	number = {23},
	year = {2010},
	pages = {1764{\textendash}1770},
	publisher = {Elsevier},
	author = {Chen, Jiahua and van Eeden, Constance and Zidek, James}
}
