%0 Journal Article %A M. M. Izmailov %T The lattice of extensions of the modal logic of two equivalence relations has the cardinality of the continuum %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2011 %P 46-48 %N 4 %U http://geodesic.mathdoc.fr/item/VMUMM_2011_4_a7/ %G ru %F VMUMM_2011_4_a7