TY  - JOUR
AU  - Gary Gordon
TI  - A \(\beta\) invariant for greedoids and antimatroids
JO  - The electronic journal of combinatorics
PY  - 1997
VL  - 4
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.37236/1298/
DO  - 10.37236/1298
ID  - 10_37236_1298
ER  -