Aleksander Olech, French and Polish fight against terrorism, Poznan 2022, p. 99; https://www.researchgate.net/publication/359135918_French_and_Polish_fight_against_terrorism
Aleksander Olech, French and Polish fight against terrorism, Poznan 2022, p. 100; https://www.researchgate.net/publication/359135918_French_and_Polish_fight_against_terrorism
2007. Wandycz, Piotr Stefan. The Twilight of French Eastern Alliances, 1926-1936: French-Czechoslovak-Polish Relations from Locarno to the Remilitarization
(页面存档备份,存于互联网档案馆) Times of Israel - The intrepid couple who restored a gem of a Polish synagogue (页面存档备份,存于互联网档案馆) About the synagogue (页面存档备份,存于互联网档案馆) (in French)