ŽÁK, Stanislav. A Sharp Separation of Sublogarithmic Space Complexity Classes. Computing and Informatics, [S. l.], v. 21, n. 6, p. 617–624, 2012. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/478. Acesso em: 1 may. 2025.