1. Snyder, H. L., & Maddox, M. Y. Information transfer from computer-generateddot-matrix displays (Report HFL-78–3/ARO-78–1). Research Triangle Park, N.C.: U.S. Army Research Office, 1978.
2. Warren, A. L. The perceptibility of lower case and all capitals newspaper headlines. Unpublished master’s thesis, 1942. Abstracted in Cornog, D. Y., & Rose, F. C. Legibility of alphanumeric characters and other symbols: II. A reference handbook. Washington: U.S. Government Printing Office, National Bureau of Standards Miscellaneous Publication 262–2, 1967.