@article {16440,
	title = {Coupling production systems and database systems: A homogeneous approach},
	journal = {Knowledge and Data Engineering, IEEE Transactions on},
	volume = {5},
	year = {1993},
	month = {1993///},
	pages = {240 - 256},
	author = {Sellis,T. and Lin,C. C and Raschid, Louiqa}
}
