Proves semistrong edge coloring decision problem is in P for k ≤ 2 and NP-complete for k ≥ 3, plus a polynomial-time algorithm for the exact index on trees.
Cameron,Induced matchings, Discrete Applied Mathematics24(1989), no
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Computational results on semistrong edge coloring of graphs
Proves semistrong edge coloring decision problem is in P for k ≤ 2 and NP-complete for k ≥ 3, plus a polynomial-time algorithm for the exact index on trees.