@article {marques2012block,
	title = {The block sphericity test},
	journal = {Mathematical Methods in the Applied Sciences},
	volume = {35},
	number = {4},
	year = {2012},
	note = {n/a},
	pages = {373{\textendash}383},
	publisher = {John Wiley \& Sons, Ltd},
	abstract = {n/a},
	author = {Marques,Filipe J. and Coelho, Carlos A}
}
