TY  - JOUR
AU  - V. K. Zakharov
TI  - Connections between the Lebesgue extension and the Borel extension of the first class, and between the preimages corresponding to them
JO  - Izvestiya. Mathematics 
PY  - 1991
SP  - 273
EP  - 302
VL  - 37
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1991_37_2_a1/
LA  - en
ID  - IM2_1991_37_2_a1
ER  -