^Jeffrey, Alan; Dai, Hui-Hui (2008). Handbook of mathematical formulas and integrals (4th ed.). Amsterdam: Elsevier Academic Press. p. 234–235. ISBN 978-0-12-374288-9. OCLC 180880679.
^Jahnke, Hans Niels (2003). A history of analysis. History of mathematics. Providence (R.I.): American mathematical society. p. 116-117. ISBN 978-0-8218-2623-2.
External links and referencesedit
Wolfram MathWorld on the Euler Integral
NIST Digital Library of Mathematical Functions dlmf.nist.gov/5.2.1 relation 5.2.1 and dlmf.nist.gov/5.12 relation 5.12.1