@book{Korbicz:1999,
author
=
"J.Korbicz",
title
=
"International Journal of Applied Mathematics and Computer Science, ISSN: 0867-857X",
publisher
=
"Technical University Press",
address
=
"Zielona Góra",
year
=
"1999",
volume
=
"Vol. 9(no 1-4) ",
number
=
"no 1-4",
}