Amir Houmansadr Negar Kiyavash Nikita Borisov RAINBOW: A Robust And Invisible Non-Blind Watermark for Network Flows. 2009 NDSS http://www.isoc.org/isoc/conferences/ndss/09/pdf/13.pdf conf/ndss/2009 db/conf/ndss/ndss2009.html#HoumansadrKB09