1. Frodin D.1996.Biological nomenclature.In:Reveal J. L.(ed.) Proceedings of a mini‐symposium on biological nomenclature in the 21st century.[http://www.life.umd.edu/bees/96sym.html].
2. International code of botanical nomenclature (Tokyo Code) adopted by the Fifteenth International Botanical Congress, Yokohama, August‐September 1993;Greuter W.;Regnum Veg.,1994