%0 Journal Article %A Fioravante Patrone %A Julian Revalski %T Characterizations of Tikhonov Well-Posedness for Preorders %J Mathematica balkanica %D 1991 %P 146 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1991_5_2_a7/ %F MABA_1991_5_2_a7