@article{HeeHid2009,
	author          = {Kees van Hee and Jan Hidders and Geert-Jan Houben and Jan Paredaens and Philippe Thiran},
	title           = {On the Relationship between Workflow Models and Document Types},
	journal         = {Information Systems},
	year            = {2009},
	volume          = {34},
	number          = {1},
	pages           = {178-208},
	issn            = {0306-4379},
	url             = {http://www.st.ewi.tudelft.nl/~hidders/docs/HeeHid2009.pdf},
	group           = {WIS}
}