@article {balkema2010meta,
	title = {Meta densities and the shape of their sample clouds},
	journal = {Journal of Multivariate Analysis},
	volume = {101},
	number = {7},
	year = {2010},
	pages = {1738{\textendash}1754},
	publisher = {Elsevier},
	author = {Balkema, AA and Embrechts, Paul and Nolde, N}
}
