• A systematic review of methods for business knowledge extraction from existing software systems 

      Normantas, Kęstutis; Vasilecas, Olegas (Baltic Journal of Modern Computing (BJMC), 2013)
      Software maintenance and evolutions often result in large cost overruns and delayed delivery of required changes or improvements. As numerous studies have shown, adopting software to meet ever-changing business needs ...
    • Business rules discovery from existing software systems 

      Normantas, Kęstutis; Vasilecas, Olegas (International journal of scientific & engineering research, 2012)
      Software maintenance consumes a large amount of its total life cycle costs. In fact, maintainers spend a lot of time analyzing source code, configurations and resource definitions referring to the documentation in order ...
    • Modelling of the business rules using UML/OCL 

      Normantas, Kęstutis; Vasilecas, Olegas (Innovative Technologies for Science, Business and Education, 2009)
      Business rules are a cruciaI business category because they describe how enterprises are conducting business. Their value in developing software systems, which must be susceptible to tit rapidly changing business requirements, ...