Edoardo Charbon Ilhami Torunoglu Watermarking Layout Topologies. 213-216 1999 conf/aspdac/1999 ASP-DAC http://csdl.computer.org/comp/proceedings/asp-dac/1999/2329/00/23290213abs.htm db/conf/aspdac/aspdac1999.html#CharbonT99