TY - JOUR AU - Yu. V. Sadovnichii TI - On some categorical properties of the functor $U_\tau$ JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1999 SP - 38 EP - 42 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1999_3_a9/ LA - ru ID - VMUMM_1999_3_a9 ER -