* Janse JD, van den Beld HE, Elphinstone J, Simpkins S, Tjou-Tam-Sin NNA, van Vaerenbergh J (2004) Introduction to Europe of Ralstonia solanacearum biovar 2 race 3 in Pelargonium zonale cuttings. Journal of Plant Pathology 86, 147-145
* Janse JD, van den Beld HE, Elphinstone J, Simpkins S, Tjou-Tam-Sin NNA, van Vaerenbergh J (2004) Introduction to Europe of Ralstonia solanacearum biovar 2 race 3 in Pelargonium zonale cuttings. Journal of Plant Pathology 86, 147-145