TY  - BOOK
AU  - Geretschlager,R
ED  - Kalinowski, J 
ED  - Svrcek, J
TI  - Central European olympiad: mathematical duel
SN  - 9789813223905
PY  - 2018///
CY  - New ajersey
PB  - World Scientific
N1  - Problem solving in mathematics & beyond 7
ER  -