Windisch, T., Grulke, O., & Klinger, T. (2006). Radial propagation of structures in drift wave turbulence. Physics of Plasmas, 13:. Retrieved from http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PHPAEN000013000012122303000001&idtype=cvips.