TY  - JOUR
AU  - Nebeský, Ladislav
TI  - A tree as a finite nonempty set with a binary operation
JO  - Mathematica Bohemica
PY  - 2000
SP  - 455
EP  - 458
VL  - 125
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.2000.126275/
DO  - 10.21136/MB.2000.126275
LA  - en
ID  - 10_21136_MB_2000_126275
ER  -