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 Valentin Bousch:

"

As a painter, Bousch utilized the large glass cuts to present rich arrays of shadows and background details, applying Grisaille color washes in modulation.[8] The luminosity and color of his support medium came into play, as he left the brightest areas in the painting, the least matted surfaces in a glass.[9] Illusionistic details were added to distract a viewer away from lead lines.[10]