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*{{citation
| last = Gallai | first = Tibor
|
| title = Transitiv orientierbare Graphen
| journal = Acta Math. Acad. Sci. Hung.
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| doi = 10.4153/CJM-1964-055-5}}.
*{{citation
| last = Golumbic | first = Martin Charles |
| title = Algorithmic Graph Theory and Perfect Graphs
| publisher = Academic Press
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| doi = 10.1016/0095-8956(78)90013-8}}.
*{{citation
| first = L. | last = Lovász |
| contribution = Perfect graphs
| title = Selected Topics in Graph Theory
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| year = 2006}}.
*{{citation
| last = Trotter | first = William T. |
| title = Combinatorics and Partially Ordered Sets — Dimension Theory
| publisher = Johns Hopkins University Press
| year = 1992}}.
*{{citation
| last = Urrutia | first = Jorge |
| title = Partial orders and Euclidean geometry
|
| editor = [[Ivan Rival|Rival, I.]]
| year = 1989
|