D. Cowan, P. Alencar, F. McGarry, C. de Lucena, und I. Nunes. 2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology, Seite 528-532. IEEE Computer Society, (2010)
D. Marghescu, und M. Rajanen. Proceedings of IASTED International Conference on Databases and Applications (DBA 2005), Seite 181-186. IASTED/ACTA Press, (2005)
A. Gorban, und A. Zinovyev. Principal Manifolds for Data Visualization and Dimension Reduction, Volume 58 von Lecture Notes in Computational Science and Enginee, Springer Berlin Heidelberg, (2008)