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[1]赵春红,董伟.平面图3可着色的充分条件[J].南京师大学报(自然科学版),2011,34(03):13.
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[2]倪伟平.最大度是6且不含有弦的小圈的可平面图的边染色[J].南京师大学报(自然科学版),2011,34(03):19.
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[3]张海辉,沈邦玉.关于无6-,8-和9-圈平面图的3-选色[J].南京师大学报(自然科学版),2004,27(02):39.
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