1. Balbi, S.: Non symmetrical correspondence analysis of textual data and confidence regions for graphical forms. In: Bolasco, S., et al. (eds.): Actes des 3es Journées internationales d’Analyse statistique des Données Textuelles. Vol. 2. CISU, Roma (1995) 5–12
2. Balbi, S., Di Meglio, E.: Contributions of Textual Data Analysis to Text Retrieval. In: Banks, D., et al. (eds.): Classification, Clustering and Data Mining Applications. Proceedings of 9th Conference of the International Federation of Classification Societies. Springer-Verlag, Heidelberg-Berlin (2004) 511–520
3. Deerwester, S., et al.: Indexing by latent semantic analysis. In: Journal of the American Society for Information Science. Vol. 6. (1990) 391–407
4. Grassia, M.G., Misuraca, M., Scepi, G.: Relazioni non simmetriche tra corpora. In: Purnelle, G., et al. (eds.): Le poid des mots. Actes des 7es Journées internationales d’Analyse statistique des Données Textuelles. Vol. 1. UCL Presses (2004) 524–532
5. Lauro, N.C., D’Ambra, L.: L’analyse non symétrique des correspondances. In: Diday, E., et al. (eds.): Data Analysis and Informatics. NH, Amsterdam (1984) 433–446