An efficient polynomial-time approximation scheme for Steiner forest in planar graphs
An efficient polynomial time approximation scheme for the vertex cover P_ 3 problem on planar graphs
2019 ◽
Vol 39
(1)
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pp. 55
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1990 ◽
Vol 26
(1)
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pp. 61-77
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1998 ◽
pp. 682-694
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