[1] ALLES P.: Erweiterungen, Diagramme und Dimension zyklischer Ordnungen. Doctoral Thesis, Darmstadt, 1986. Zbl 0616.06001

[2] ALLES P.-NEŠETRIL J., POLJAK S.: Extendability, dimensions and diagrams of cyclic orders. SIAM J. Discrete Math. 4 (1991), 453-471. MR 1129385 | Zbl 0747.06002

[3] NOVÁK V.: Cyclically ordered sets. Czechoslovak Math. J. 32 (1982), 460-473. MR 0669787 | Zbl 0515.06003

[4] NOVÁK V., NOVOTNÝ M.: Binary and ternary relations. Math. Bohem. 117 (1992), 283-292. MR 1184541 | Zbl 0772.04005

[5] QUILLIOT A.: Cyclic orders. European J. Combin. 10 (1989), 477-488. MR 1014556 | Zbl 0692.05059

[6] ŠLAPAL J.: Relations and topologies. Czechoslovak Math. J. 43 (1993), 141-150. MR 1205237 | Zbl 0797.04002