TY - JOUR AU - Ákos Győry AU - Eszter Kónya TI - Proving skills in geometry of secondary grammar school leavers specialized in mathematics JO - Annales mathematicae et informaticae PY - 2019 SP - 217 EP - 236 VL - 50 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.33039/ami.2019.11.003/ DO - 10.33039/ami.2019.11.003 LA - en ID - AMI_2019_50_a16 ER -