@book{22064,
	author = {Lockyer, K. G. and Lockyer, K. G.},
	title = {Critical path analysis and other project network techniques /},
	publisher = {Pitman,},
	year = {1984.},
	address = {London ;},
	edition = {4th ed.},
	note = {Rev. ed. of: An introduction to critical path analysis. 3rd ed. 1969.}
}