@article {Lee.Joe2018b,
	title = {Efficient computation of multivariate empirical distribution functions at the observed values},
	journal = {Computational Statistics},
	volume = {33},
	year = {2018},
	month = {SEP},
	pages = {1413-1428},
	doi = {10.1007/s00180-017-0771-x ISSN = 0943-4062},
	author = {Lee, D and Joe, H}
}
