String graph: Difference between revisions

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m Open access bot: doi updated in citation with #oabot.
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| title = Optimality program in segment and string graphs
| volume = 81
| year = 2019}}.| doi-access = free
}}.
*{{citation
| last1 = Chalopin | first1 = J. | last2 = Gonçalves | first2 = D. | last3 = Ochem | first3 = P.