[MathCongrès]
Lectures on modern teaching of geometry and related topics
/ Ed. Behnke, Heinrich ; Ed. Choquet, G. ; Ed. Dieudonné, Jean ; Ed. Fenchel, Werner ; Ed. Freudenthal, Hans ; Ed. Hajos, G. ; Ed. Pickert, Günter.
-Aarhus : Aarhus universitet, 1960. - 169
[MathOuvrage]
Hungarian problem book 2
/ Ed. Hajos, G. ; Ed. Neukomm, G. ; Ed. Suranyi, J..
-Washington : Mathematical Association of America, 1963. - 119
[MathOuvrage]
Hungarian problem book 1
/ Ed. Hajos, G. ; Ed. Neukomm, G. ; Ed. Suranyi, J..
-Washington : Mathematical Association of America, 1963. - 11