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 Galina Ustvolskaya:

"

From 1947 to 1977 she taught composition at Leningrad Conservatory. She taught her students to write polyphonically and contrapuntally, showing them works by Mahler and Stravinsky when they were permitted in the 1960s. Her teaching style was more focused on aesthetics and feeling instead of harmony or scientific technique, and often encouraged students to experiment with modes instead of the typical major or minor scales.[citation needed]