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CHARACTERIZATION OF CYCLE OBSTRUCTION SETS FOR IMPROPER COLORING PLANAR GRAPHS Choi, Ilkyoo; Liu, Chun-Hung; Oum, Sang-il, SIAM JOURNAL ON DISCRETE MATHEMATICS, v.32, no.2, pp.1209 - 1228, 2018-06 |
Planar graphs with girth at least 5 are (3,5)-colorable Choi, Ilkyoo; Raspaud, Andre, DISCRETE MATHEMATICS, v.338, no.4, pp.661 - 667, 2015-04 |
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