S. Ruamrungsri, W. Bumphenyoo, R. Sriwichai, and P. Apavatjrut, “ Phosphorus and Potassium Deficiencies on Growth and Development of Globba rosae Gagnep”., Agr. Nat. Resour., vol. 41, no. 1, pp. 72–83, Mar. 2007.