Proceedings of the Second International Conference on the Theory of Groups. Lecture Notes in Mathematics., 372. Springer. pp. 463–487. ISBN 978-3-540-06845-7. "Magnus, Wilhem". 10 Haziran 2018 tarihinde kaynağından arşivlendi.
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Proceedings of the Second International Conference on the Theory of Groups. Lecture Notes in Mathematics., 372. Springer. pp. 463–487. ISBN 978-3-540-06845-7. "Magnus, Wilhem". 10 Haziran 2018 tarihinde kaynağından arşivlendi.