Birkler, J. L., 1944-, Aircraft turbine engine monitoring systems : overview and lessons learned from six case studies / J.L. Birkler and J.R. Nelson - v, 29 pages ; 28 cm. - The Rand paper series; P-6337 . - The Rand paper series; P-6337 . Includes bibliographical references (pages 28-29) Subjects--Topical Terms: Airplanes--Turbojet engines--In-flight monitoring. Airplanes, Military--Testing