TY  - JOUR
AU  - D. M. Silberger
TI  - How many unbordered words?
JO  - Commentationes Mathematicae
PY  - 1980
SP  -  143
EP  - 145
VL  - 22
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v22i1.6013/
DO  - 10.14708/cm.v22i1.6013
LA  - pl
ID  - 10_14708_cm_v22i1_6013
ER  -