@PhDThesis{	  hachez03comparative,
  author =	 {Gael Hachez},
  title =	 {A Comparative Study of Software Protection Tools
                  Suited for E-Commerce with Contributions to Software
                  Watermarking and Smart Cards},
  school =	 {Universite Catholique de Louvain},
  year =	 2003,
  month =	 mar,
  section = {SOFTWARE-WATERMARKING}
}