JURŠĖNAS, Nikodemas. A Letter from F. Hartmann to V. Seseman. Problemos, [S. l.], v. 53, p. 188, 1998. DOI: 10.15388/Problemos.1998.53.6915. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/6915. Acesso em: 24 oct. 2025.