%0 Journal Article %A Tetruashvili, M. %T Complexity of the decidability of the unquantified set theory with a rank operator. %J Georgian Mathematical Journal %D 1994 %P 561-565 %V 1 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/GMJ_1994__1_5_47154/ %G en %F GMJ_1994__1_5_47154