%0 Journal Article
%A O. V. Borodin
%T A proof of Gr\"unbaum's conjecture on the acyclic $5$-colorability of planar graphs
%J Doklady Akademii Nauk
%D 1976
%P 18-20
%V 231
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1976_231_1_a2/
%G ru
%F DAN_1976_231_1_a2