Harold Exton is a mathematician at University of Central Lancashire (called Preston Polytechnic while he was there) working on hypergeometric functions, who introduced the Hahn–Exton q-Bessel function.

  • Exton, Harold (1976), , Mathematics and its applications, Chichester: Ellis Horwood Ltd., ISBN 978-0-470-15190-7, MR
  • Exton, Harold (1978), , Mathematics and its Applications, Chichester: Ellis Horwood Ltd., ISBN 978-0-85312-122-0, MR
  • Exton, Harold (1983), , Ellis Horwood Series: Mathematics and its Applications, Chichester: Ellis Horwood Ltd., ISBN 978-0-85312-491-7, MR