TY  - JOUR
AU  - Mitchell, J. M. O.
TI  - Counting word-trees
JO  - Glasgow mathematical journal
PY  - 1974
SP  - 148
EP  - 149
VL  - 15
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002317/
DO  - 10.1017/S0017089500002317
ID  - 10_1017_S0017089500002317
ER  -