Thepsithar, C. , Euawong, N. , Jonghomkajorn, N. (2013), 'In vitro Propagation of Purple Nutsedge (Cyperus rotundus L.) for Useful Chemical Extraction', World Academy of Science, Engineering and Technology, Open Science Index 80, International Journal of Biotechnology and Bioengineering, 7(8), 797 - 801.