A. Gorban, and A. Zinovyev. Principal Manifolds for Data Visualization and Dimension Reduction, volume 58 of Lecture Notes in Computational Science and Enginee, Springer Berlin Heidelberg, (2008)
C. Thibierge, F. Ladieu, and D. Hôte. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)