Xerox was first. // Optical Spectra. — May 1980. — Vol. 14 — No. 5 — P. 40.
Countermeasure Systems. / Edited by David Pollock. — Ann Arbor, MI: Infrared Information Analysis Center, 1993. — P. xv — (The Infrared and Electro-Optical Systems Handbook; v. 7) — ISBN 0-8194-1072-1.
Statement of Lt. Gen. William C. Gribble, Chief of Research and Development, Department of the Army. / Department of Defense Appropriations for Fiscal Year 1974 : Hearings before the Research and Development Subcommittee, Committee on Armed Services, United States Senate, 93rd Congress, 1st Session, on S. 1263, May 23, 1973. — Washington, D.C.: U.S. Government Printing Office, 1973. — P. 3866 — 4051 p.
