%0 Journal Article %A I. L. Bloshanskii %T The structure and geometry of maximal sets of convergence and unbounded divergence almost everywhere of multiple Fourier series of functions in $L_1$ equal to zero on a given set %J Izvestiya. Mathematics %D 1990 %P 1-35 %V 35 %N 1 %U http://geodesic.mathdoc.fr/item/IM2_1990_35_1_a0/ %G en %F IM2_1990_35_1_a0