Integrating Contextual Information into Text Document Clustering with Self-Organizing Maps. - Daniel Pullwitt; Ralf Der (WSOM, 2001)

Integrating contextual information to enhance SOM-based text document clustering. - Daniel Pullwitt (Neural Networks, 2002)

Explorative Analyse von Textkorpora mit Clusterverfahren. - Daniel Pullwitt (2004)