HEYER, H. Hypergruppen in Analysis und Wahrscheinlichkeitstheorie (Ein Tribut an den Meister). Austrian Journal of Statistics, [S. l.], v. 34, n. 4, p. 411–419, 2016. DOI: 10.17713/ajs.v34i4.427. Disponível em: https://www.ajs.or.at/index.php/ajs/article/view/vol34%2C%20no4%20-%208. Acesso em: 9 oct. 2025.