@inproceedings{1037793, title = "Expressing ideas through sound manipulation with logo", author = "Γυφτοδήμος, Γεώργιος and Kynigos, Chronis and Σπηλιοπούλου, Μαρία", year = "1993", pages = "55-65", publisher = "Εκπαιδευτήρια Δούκας", booktitle = "Logo-like learning environments:reflection and prospects. proceedings of the fourth European Logo Conference, University of Athens, Department of Informatics, 28-31 August 1993, Athens Greece" }