Andreĭ Sakharov Papers, 1852-2002 (MS Russ 79), Houghton Library, Harvard University.
Andreĭ Sakharov Papers, 1852-2002 (MS Russ 79), Houghton Library, Harvard University. https://id.lib.harvard.edu/ead/hou01977/catalog Accessed April 25, 2024.