Geodesic
A clone-theoretic formulation of the Erdos-Faber-Lovász conjecture
Discussiones Mathematicae. Graph Theory, Tome 24 (2004) no. 3, pp. 545-549

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The Erdős-Faber-Lovász conjecture states that if a graph G is the union of n cliques of size n no two of which share more than one vertex, then χ(G) = n. We provide a formulation of this conjecture in terms of maximal partial clones of partial operations on a set.
Keywords: chromatic number, Erdős-Faber-Lovász conjecture, maximal partial clones 
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     author = {Haddad, Lucien and Tardif, Claude},
     title = {A clone-theoretic formulation of the {Erdos-Faber-Lov\'asz} conjecture},
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Haddad, Lucien; Tardif, Claude. A clone-theoretic formulation of the Erdos-Faber-Lovász conjecture. Discussiones Mathematicae. Graph Theory, Tome 24 (2004) no. 3, pp. 545-549. http://geodesic.mathdoc.fr/item/DMGT_2004_24_3_a16/