BBC: On this dayArchived 2017-04-27 at the Wayback Machine quote: It follows growing unrest in Greece, and comes eight days after student uprisings in which 13 people died and hundreds were injured..
Καλλιβρετάκης 2004, pp. 44–45. Καλλιβρετάκης, Λεωνίδας (2004). "Πολυτεχνείο '73: Το ζήτημα των θυμάτων: Νεκροί και τραυματίες" [Polytechnic School '73: The question of the victims: dead and injured]. Πολυτεχνείο '73: ρεπορτάζ με την Ιστορία (in Greek). Vol. 2. pp. 38–55. hdl:10442/8782.
Etho Polytechneio through Internet archive Text in Greek: Εδώ Πολυτεχνείο! Λαέ της Ελλάδας το Πολυτεχνείο είναι σημαιοφόρος του αγώνα μας, του αγώνα σας, του κοινού αγώνα μας ενάντια στη δικτατορία και για την Δημοκρατία, transliterated as: Etho Polytechneio! Lae tis Elladas to Polytechneio einai simaioforos tou agona mas, tou agona sas, tou koinou agona mas enantia sti diktatoria kai gia tin Dimokratia)
BBC: On this dayArchived 2017-04-27 at the Wayback Machine quote: It follows growing unrest in Greece, and comes eight days after student uprisings in which 13 people died and hundreds were injured..