Knuth, Donald E.:
Mathematical Typography. [Reprinted as part 1 of TeX and Metafont: New Directions in Typesetting (Providence, R.I.: American Mathematical Society, and Bedford, Mass: Digital Press, 1979)]
MR 0520078
Knuth, Donald E.: Mathematical Typography.
Knuth, Donald E.:
Tau Epsilon Chi, a system for technical text. Stanford Computer Science Report 675 (Stanford, California, September 1978), 198 pp. [Reprinted as part 2 of TEX and Metafont, the book cited above.]
MR 0537439
Knuth, Donald E.: The WEB system of structured documentation. Stanford Computer Science Report 980 (Stanford, California, September 1983), 206 pp.
Knuth, Donald E.: Literate Programming. The Computer Journal 27 (1984), 97–111.
Goosens, Michel, Rahtz, Sebastian: Using Adobe Type 1 Multiple Master fonts with TeX. Baskerville Vol. 5, No. 3 (UK TEX Users’ Group, June 1995, ISSN 1354-5930), 4–8.