@book{82536,
	author = {Bolton, W. and ebrary, Inc.},
	title = {Programmable logic controllers},
	publisher = {Newnes,},
	year = {2006.},
	address = {Oxford, [Eng.] ;},
	edition = {3rd ed.},
	note = {Previous ed.: 2000.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10138762}
}