@article {3974,
	title = {Partial Materialization for Online Analytical Processing Over Multi-Tagged Document Collections},
	journal = {Knowledge and Information Systems (KAIS)},
	volume = {47},
	year = {2016},
	pages = {697--732},
	doi = {10.1007/s10115-015-0871-2},
	author = {Grzegorz Drzadzewski and Frank Tompa}
}
