Die fünf Platonischen Körper - Sachs, Eva, 1882- (New York : Arno Press, 1976)
Reprint of the 1917 ed. published by Weidmann, Berlin, which was issued as Heft 24 of Philologische Untersuchungen.
Mode of access: Internet.
Keywords: Plato -- Mathematics; Matter; Pythagoras and Pythagorean school