Foto: Jan Zatorsky
Foto: Autor: Wikimedia Commons/ The Central Intelligence Agency – 10 Soviet Invasion of Czechoslovakia, Volné dílo, https://commons.wikimedia.org/w/index.php?curid=29195095
Foto: Autor: Wikimedia Commons/ Engramma.it – Engramma.it, n. 64, agosto 2008, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18375507
