TOPLAK, M. Martin Ježek, Archaeology of Touchstones. An introduction based on finds from Birka, Sweden, Leiden: Sidestone Press 2017, ISBN 978-90-8890-517-9, 220 pp. Journal of Northern Studies, [S. l.], v. 12, n. 2, p. 120–124, 2019. Disponível em: https://journals.ub.umu.se/index.php/jns/article/view/926. Acesso em: 23 feb. 2025.