Buletinul Stiintific al Universitatii "Politechnica" din Timisoara, ROMANIA Seria AUTOMATICA si CALCULATOARE, Transactions on AUTOMATIC CONTROL and COMPUTER SCIENCE (Vol. 4)., pp. 36-41. ISSN 1224/600X
Fundamental structural properties in image and pattern analysis 1999. International workshop. Budapest, 1999. (Schriftenreihe der Östereichischen Computer Gesellschaft, 130.)