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Norman E. Steenrod, Paul R. Halmos, Menahem M. Schiffer, Jean A.
Dieudonne How to Write Mathematics American Mathematical
Society, 1973, ISBN 0-8218-0055-8
Donald E. Knuth, Tracy Larrabee, & Paul M. Roberts Mathematical
Writing Mathematical Association of America, 1989, ISBN
0-88385-063-X