@article { ,
	title = {Locking in DAG-Structured Databases},
	journal = {Microprocessing and Microprogramming, No 39},
	year = {1993},
	month = {01/1993},
	pages = {161-164},
	type = {article},
	author = {Wojciech Cellary and Wieczerzycki, W.}
}
