TY  - JOUR
AU  - Georgieva, Desislava
TI  - Methodological developments for the introduction of basic concepts from combinatorics
JO  - Mathematics and Education in Mathematics
PY  - 2023
SP  - 172
EP  - 179
VL  - 52
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MEM_2023_52_a14/
LA  - bg
ID  - MEM_2023_52_a14
ER  -