AC 20-74 29 July 1971 Appendix 4
16. 1968 NEREM Technical Publications. How to Measure Light - P.B. Lape and D. V. Ryer, International Light, Inc., Newburyport, Maas.
17. Illumination Engineering - Warren B. Boast, 1953.
18. Colorimetry, NBS Monograph 104, 1968. Superintendent of Documents, Washington, D. C. 20402.
19. Light and Color Measurements of Small Light Sources, Boris Meric, General Electric Small Lamp Diviaion, Nela Park, New York.
20. The Measurement of the Color of Light Emitted by Signal Devices, by Stewart Sease and Paul M. Fisher, Rohm and Haas Color Laboratory, Available as a reprint from "Color Engineering," Reprint Dept., 18 John Street, New York, New York 10038.
21. The Application of a Color-Correction Factor in the Photometry of Colored Signal Lights by George K. C. Hardesty and I. O. Iwiat, Neval Ship Research and Development Laboratory, Annapolis, Maryland (Technical Note ELECLAB 125/68 of May 1968)
22. Maximum Luminous Efficiency Contour Charts for Colored Materials by George K. C. Hardesty, R. L. Booker, and J. I. Mclane, Naval Ship Research and Development Laboratory, Annapolis, Maryland 21402 (Technical Note, ELECLAB 200/68 of October 1968).
23. Photometry, W. I. Welsh Constable, Third Edition, 1958.
24. The Role of Exterior Lights in Mid-Air Collieion Prevention, T.H.
Projector, Applied Paychology Corp., July 1962, ASTIA Document AD 602421.
25. Computation of the Effective Intensity of Flashing Lights, C. A. Douglas, Illumination Engineering, Vol. 52, page 641, December 1957.