@article {le1992global,
	title = {A global test for effects in 2k factorial design without replicates},
	journal = {Journal of statistical computation and simulation},
	volume = {41},
	number = {1-2},
	year = {1992},
	pages = {41{\textendash}54},
	publisher = {Taylor \& Francis},
	author = {Le, Nhu D and Zamar, Ruben H}
}
