Graßhoff, Gerd Department Structural Changes in Systems of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
Christlieb, N., Graßhoff, G., Nelke, A., Schlemminger, A., & Wisotzki, L. (1998). Automatic spectral classification. In I. Balderjahn, R. Mathar, & M. Schader (Eds.), Classification, data analysis, and data highways (pp. 16-23). Heidelberg: Springer.