@misc{GoePitVepGamWigWad09,
 author={Ben Goertzel and Joel Pitt and Linas Vepstas and Gustavo Gama and Jared Wigmore and Trent Waddington},
 title={OpenCog},
 year={2009},
 note={\url{http://mloss.org/software/view/173/}}
}