TY  - JOUR
AU  - Csákány, Rita
AU  - Kahn, Jeff
TI  - A homological approach to two problems on finite sets
JO  - Journal of Algebraic Combinatorics
PY  - 1999
SP  - 141
EP  - 149
VL  - 9
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JAC_1999__9_2_a4/
LA  - en
ID  - JAC_1999__9_2_a4
ER  -