S. Homoceanu, F. Geilert, C. Pek, and W. Balke. Database Systems for Advanced Applications, volume 8422 of Lecture Notes in Computer Science, Springer International Publishing, (2014)
S. Homoceanu, J. Kalo, and W. Balke. Foundations of Intelligent Systems, volume 8502 of Lecture Notes in Computer Science, Springer International Publishing, (2014)