Prívara, Igor; Ružička, Peter, eds. (1997-08-13). Mathematical Foundations of Computer Science 1997. 22nd International Symposium, MFCS '97 Bratislava, Slovakia, August 25–29, 1997 Proceedings. LNCS. Vol. 1295. Springer-Verlag. doi:10.1007/BFb0029943. ISBN3-540-63437-1. ISSN0302-9743.
Pacholski, Leszek; Ružička, Peter, eds. (2001-11-07). SOFSEM 2001: Theory and Practice of Informatics. 28th Conference on Current Trends in Theory and Practice of Informatics Piešt’any, Slovak Republic, November 24 – December 1, 2001 Proceedings. LNCS. Vol. 2234. Springer-Verlag. doi:10.1007/3-540-45627-9. ISBN3-540-42912-3. ISSN0302-9743.
Prívara, Igor; Ružička, Peter, eds. (1997-08-13). Mathematical Foundations of Computer Science 1997. 22nd International Symposium, MFCS '97 Bratislava, Slovakia, August 25–29, 1997 Proceedings. LNCS. Vol. 1295. Springer-Verlag. doi:10.1007/BFb0029943. ISBN3-540-63437-1. ISSN0302-9743.
Pacholski, Leszek; Ružička, Peter, eds. (2001-11-07). SOFSEM 2001: Theory and Practice of Informatics. 28th Conference on Current Trends in Theory and Practice of Informatics Piešt’any, Slovak Republic, November 24 – December 1, 2001 Proceedings. LNCS. Vol. 2234. Springer-Verlag. doi:10.1007/3-540-45627-9. ISBN3-540-42912-3. ISSN0302-9743.