TY - JOUR AU - I. L. Kantor TI - Some problems in $\mathfrak{L}$-functor theory JO - Matematičeskie trudy PY - 1989 SP - 54 EP - 75 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MT_1989_16_a2/ LA - ru ID - MT_1989_16_a2 ER -