USPENSKAJA, Anna. Das dritte Petersburger Gymnasium. Hyperboreus, Bern, v. 19, n. 1-2, p. 275–288, 2014. DOI: 10.36950/hyperboreus.EAOU6766. Disponível em: https://judaica.ch/index.php/Hyperboreus/article/view/12684. Acesso em: 14 sep. 2025.