TY - JOUR AU - L. A. Arutyunyan TI - On the lattice of closed classes of non-homogeneous functions with trace $M$ JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1994 SP - 143 EP - 144 VL - 49 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1994_49_2_a4/ LA - en ID - RM_1994_49_2_a4 ER -