Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Mandelbrot set:

"

The work of Douady and Hubbard occurred during an increase in interest in complex dynamics and abstract mathematics,[10] and the study of the Mandelbrot set has been a centerpiece of this field ever since.[citation needed]