%0 Journal Article %A Giaro, Krzysztof %A Kubale, Marek %T A Note on Polynomial Algorithm for Cost Coloring of Bipartite Graphs with Δ ≤ 4 %J Discussiones Mathematicae. Graph Theory %D 2020 %P 885-891 %V 40 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2020_40_3_a12/ %G en %F DMGT_2020_40_3_a12