TY  - JOUR
AU  - E.M. WRIGHT
TI  - The Number of Graphs on Many Unlabelled Nodes.
JO  - Mathematische Annalen
PY  - 1969
SP  - 250
EP  - 253
VL  - 183
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1969__183_161895/
ID  - MAN_1969__183_161895
ER  -