//-->
Multivariate Weibull mixtures with proportional hazard restrictions for dwell-time-based session clustering with incomplete data
Mair, Patrick, (2009)
Computergestützte Inhaltsanalyse : ein Modell für die Printmedien
Lederer, Brigitte, (1992)
Web usage mining in e-commerce
Grossmann, Wilfried, (2004)