Reference

G.J. Scoles, B.S. Gill, Z.-Y. Xin, B.C. Clarke, C.L. McIntyre, C. Chapman, R. Appels (1988): Frequent duplication and deletion events in the 5 S RNA genes and the associated spacer regions of the Triticeae – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 160: 105 - 122.