@inproceedings{1047709,
    title = "An enigma resolved",
    author = "Meulen, Johann van der",
    year = "1957",
    pages = "166-170",
    publisher = "Γαλλικό Ινστιτούτο Αθηνών",
    booktitle = "First World Congress of Pythagorean Organizations: proceedings of the congress, Athens, Samos and Brussels, July-August 1955"
}