ROINILA, Mika. Erhard J. Alm, Inventor and Entrepreneur. Scandinavian-Canadian Studies, [S. l.], v. 17, p. 70–75, 2007. DOI: 10.29173/scancan23. Disponível em: https://scancan.net/index.php/scancan/article/view/23. Acesso em: 21 dec. 2024.