Garbe (1995). Garbe, Renate, Tree-width and path-width of comparability graphs of interval orders, Proc. 20th International Workshop Graph-Theoretic Concepts in Computer Science (WG'94), Lecture Notes in Computer Science 903, Springer-Verlag: 26–37, 1995, ISBN 978-3-540-59071-2, doi:10.1007/3-540-59071-4_35.
Garbe (1995)将此成果归功于Ton Kloks的博士论文(1993);Garbe对区间序的可比图的多项式时间算法推广了结果,而弦图属于此类可比图。 Garbe, Renate, Tree-width and path-width of comparability graphs of interval orders, Proc. 20th International Workshop Graph-Theoretic Concepts in Computer Science (WG'94), Lecture Notes in Computer Science 903, Springer-Verlag: 26–37, 1995, ISBN 978-3-540-59071-2, doi:10.1007/3-540-59071-4_35.
Suchan & Todinca (2007). Suchan, Karol; Todinca, Ioan, Pathwidth of circular-arc graphs, Proc. 33rd International Workshop on Graph-Theoretic Concepts in Computer Science (WG 2007), Lecture Notes in Computer Science 4769, Springer-Verlag: 258–269, 2007, doi:10.1007/978-3-540-74839-7_25.
Möhring (1990); Ferreira & Song (1992). Möhring, Rolf H., Graph problems related to gate matrix layout and PLA folding, Tinhofer, G.; Mayr, E.; Noltemeier, H.; et al (编), Computational Graph Theory, Computing Supplementum 7, Springer-Verlag: 17–51, 1990, ISBN 3-211-82177-5. Ferreira, Afonso G.; Song, Siang W., Achieving optimality for gate matrix layout and PLA folding: a graph theoretic approach, Proc. 1st Latin American Symposium on Theoretical Informatics (LATIN '92), Lecture Notes in Computer Science 583, Springer-Verlag: 139–153, 1992, ISBN 3-540-55284-7, doi:10.1007/BFb0023825, hdl:10068/43314.
Möhring (1990); Ferreira & Song (1992). Möhring, Rolf H., Graph problems related to gate matrix layout and PLA folding, Tinhofer, G.; Mayr, E.; Noltemeier, H.; et al (编), Computational Graph Theory, Computing Supplementum 7, Springer-Verlag: 17–51, 1990, ISBN 3-211-82177-5. Ferreira, Afonso G.; Song, Siang W., Achieving optimality for gate matrix layout and PLA folding: a graph theoretic approach, Proc. 1st Latin American Symposium on Theoretical Informatics (LATIN '92), Lecture Notes in Computer Science 583, Springer-Verlag: 139–153, 1992, ISBN 3-540-55284-7, doi:10.1007/BFb0023825, hdl:10068/43314.