Julien P. Stern, Gaël Hachez, François Koeune, Jean-Jacques Quisquater. Robust Object Watermarking: Application to Code. In Andreas Pfitzmann, editor, Information Hiding, Third International Workshop, IH 99, Dresden, Germany, September 29 - October 1, 1999, Proceedings. Volume 1768 of Lecture Notes in Computer Science, pages 368-378, Springer, 1999.