Geodesic
Chordal intersection graphs of bands
Czechoslovak Mathematical Journal, Tome 49 (1999) no. 2, pp. 225-232

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Classification : 05C25, 05C75, 20M10 
Pondělíček, Bedřich. Chordal intersection graphs of bands. Czechoslovak Mathematical Journal, Tome 49 (1999) no. 2, pp. 225-232. http://geodesic.mathdoc.fr/item/CMJ_1999_49_2_a0/
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     volume = {49},
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     zbl = {0949.05072},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1999_49_2_a0/}
}
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[2] Ackerman, M.; McMorris, F.R.; Seif, S.: Chordal intersection graphs of semigroups. Congrressus Numerantium 93 (1993), 45–49. | MR

[3] Petrich, M.: Lectures in Semigroups. Akademie-Verlag-Berlin, 1977. | MR | Zbl