@book{180159,
	author = {Helfrick, Albert D. and William David Cooper.},
	title = {Modern electronic instrumentation and measurement techniques /},
	publisher = {Prentice Hall,},
	year = {c1990.},
	address = {Englewood Cliffs, N.J. :},
	note = {Rev. ed. of: Electronic instrumentation and measurement techniques / William David Cooper, Albert D. Helfrick. 3rd ed. c1985.}
}