Wikipedia, The Free Encyclopedia, s.v. "Начала термодинамики,"
(accessed February 5, 2020)
“Начала термодинамики,” used under Creative Commons Attribution-ShareAlike 3.0 Unported / Minor revisions from the original
Recording Copyright © Sofiya Asher 2020
https://creativecommons.org/licenses/by-nc-sa/4.0/
