O. Hassanzadeh, M. Sadoghi, и R. Miller. Proceedings of the International Workshop on Quality in Databases (QDB 2007), стр. 11-18. Vienna, Austria, (2007)
P. Rosin, und H. Nyongesa. Real-World Applications of Evolutionary Computing, Volume 1803 von LNCS, Seite 87--96. Edinburgh, Springer-Verlag, (17 April 2000)