Hungarian problem books I, II & III; based on the Eotvos competitions
Bks.I & II ed. by G. Hajos, G. Neukomm and J. Suranyi. Bk.III ed. by Andy Liu.
- Washington, D.C. Mathematical Association of America 1963; 2001
- Bk.I-110p. Bk.II-120p. Bk.III-124p.
- New Mathematical Library ; 11-13 .