@book{27766,
	author = {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.}
}