Search for: [Subject and Keywords = object\-oriented software engineering] OR [Subject and Keywords = system families] OR [Subject and Keywords = commonality and variability] OR [Subject and Keywords = feature diagram] OR [Subject and Keywords = UML extensibility mechanisms] OR [Title = Extending the UML for modelling variability for system families] OR [Creator = Robak, Silva] OR [Creator = Franczyk, Bogdan] OR [Creator = Politowicz, Kamil]