G. Siromoney, R. Siromoney, and T. Robinson. A Perspective in Theoretical Computer Science, volume 16 of World Scientific Series in Computer Science, World Scientific, (1989)
K. Petrauskas, and R. Baronas. DB&IS (Selected Papers), volume 315 of Frontiers in Artificial Intelligence and Applications, page 95-108. IOS Press, (2018)
C. Li, J. Gao, S. Liu, and G. Sun. eLEOT, volume 243 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 330-337. Springer, (2018)
Y. Wang. eLEOT, volume 243 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 250-256. Springer, (2018)
C. Zhang, X. Zhang, and X. Wu. eLEOT, volume 243 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 153-161. Springer, (2018)