PÄRTEL, K.; VAASMA, M. In memoriam: Ain Raitviir. Folia Cryptogamica Estonica, [S. l.], v. 43, p. 79–88, 2007. Disponível em: https://ojs.utlib.ee/index.php/FCE/article/view/13758. Acesso em: 6 may. 2024.