B. K.  Simon, « GrassWorld - interactive key and information system of world grasses », Kew Bulletin, vol. 62, p. 475-484, 2007.

B. K.  Simon, « Update of GrassWorld - information system and interactive key to world grasses », in 4th International Conference: The Comparative Biology of the Monocotyledons: 5th International Symposium: Grass Systematics and Evolution, Copenhagen: Monocots IV, 2008, p. 56.