@article {3927,
	title = {Non-Deterministic Queue Operations},
	journal = {Journal of Computer and System Sciences (JCSS)},
	volume = {51},
	year = {1995},
	pages = {211--222},
	doi = {10.1006/jcss.1995.1062},
	author = {Hector Garcia-Molina and Ken Salem}
}
