Abramowitz, Milton; Stegun, Irene Ann, eds. (1983) [June 1964]. "Chapter 7, eqn 7.3.1 – 7.3.2". Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. Applied Mathematics Series. 55 Washington D.C.; New York: United States Department of Commerce, National Bureau of Standards; Dover Publications. ISBN 978-0-486-61272-0. LCCN64-60036 & 65-12253. MR0167642.
R. Nave, The Cornu spiral, Hyperphysics (2002) (Uses πt²/2 instead of t².)
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lccn.loc.gov
Abramowitz, Milton; Stegun, Irene Ann, eds. (1983) [June 1964]. "Chapter 7, eqn 7.3.1 – 7.3.2". Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. Applied Mathematics Series. 55 Washington D.C.; New York: United States Department of Commerce, National Bureau of Standards; Dover Publications. ISBN 978-0-486-61272-0. LCCN64-60036 & 65-12253. MR0167642.
Milton Abramowitz and Irene A. Stegun, eds. Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. New York: Dover, 1972. (See Chapter 7)