@article{cordella2004sub,

   title =	 {A (sub) graph isomorphism algorithm for matching

                   large graphs},

   author =	 {Cordella, Luigi P and Foggia, Pasquale and Sansone,

                   Carlo and Vento, Mario},

   journal =	 {Pattern Analysis and Machine Intelligence, IEEE

                   Transactions on},

   volume =	 26,

   number =	 10,

   pages =	 {1367--1372},

   year =	 2004,

   publisher =	 {IEEE}

 }