1. Anouar, F., Badran, F., and Thiria, S. (1997): Cartes topologiques et nuées dynamiques. In: S. Thiria et al. (eds.) (1997), 190–206.
2. Badran, F., Daigremont, Ph., and Thiria, S. (1997): Régression par carte topologique. In: S. Thiria et al. (eds.) (1997), 207–222.
3. Bock, H.H. (1969): The equivalence of two extremal problems and its applicaton to the iterative classification of multivariate data. Abstract, Tagung’ mathematische Statistik’, Forschungsinstitut Oberwolfach, March 1969.
4. Bock, H.H. (1974): Automatische Klassifikation. Vandenhoeck & Ruprecht, Göttingen.
5. Bock, H.H. (1985): On some significance tests in cluster analysis. J. of Classification 2, 77–108.