TY  - JOUR
AU  - I. M. Gel'fand
AU  - V. V. Serganova
TI  - On the general definition of a matroid and a greedoid
JO  - Doklady Akademii Nauk
PY  - 1987
SP  - 15
EP  - 20
VL  - 292
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1987_292_1_a1/
LA  - ru
ID  - DAN_1987_292_1_a1
ER  -