Contact the authors

Dr. Emil Krén is a retired scientist in solid state physics, presently a consultant in information technology at KFKI Computer Systems Corporation, Budapest, Hungary.

You can contact him at kren@sunserv.kfki.hu

Mr. Dániel Marx is a research assistant at the Department of Computer Science and Information Theory, Budapest University of Technology and Economics, Budapest, Hungary.

You can contact him at marx@inf.bme.hu