1. 9th DIMACS Implementation Challenge. URL http://www.dis.uniroma1.it/challenge9/download.shtml. 9th DIMACS Implementation Challenge. URL http://www.dis.uniroma1.it/challenge9/download.shtml.
2. Groute Runtime Environment Source Code. URL http://www.github.com/groute/groute. Groute Runtime Environment Source Code. URL http://www.github.com/groute/groute.
3. Contemporary Mathematics;Bader D. A.,2012