%0 Journal Article
%A V. L. Levin
%T Continuous utility theorem for closed preorders on a metrizable $\sigma$-compact space
%J Doklady Akademii Nauk
%D 1983
%P 800-804
%V 273
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1983_273_4_a6/
%G ru
%F DAN_1983_273_4_a6