TY  - JOUR
AU  - E. A. Mikheeva
TI  - Classification of lower neighborhoods of closed classes in the lattice~$\mathcal L_k$
JO  - Diskretnaya Matematika
PY  - 1991
SP  - 3
EP  - 15
VL  - 3
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DM_1991_3_4_a1/
LA  - ru
ID  - DM_1991_3_4_a1
ER  -