@book{594248,
	author = {Prouty, Raymond W.},
	title = {Helicopter performance, stability, and control /},
	publisher = {R.E. Krieger Pub. Co.,},
	year = {1990.},
	address = {Malabar, Fla. :},
	note = {Reprint, with corrections. Originally published: Boston : PWS Engineering, c1986.}
}