@phdthesis{1309574,
    title = "Changing representation of curves and surfaces: exact and approximate methods",
    authorField = "Kalinka, Tatjana",
    year = "2013",
    school = "Βιβλιοθήκη Σχολής Θετικών Επιστημών, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών"
}